The English version of my patches for OWC-ND is now available http://tesnexus.com/downloads/file.php?id=37184.
@Marshmallow: Du brauchst nicht extra auf Deutsch zu fragen

As nnw said, it would be too much work. I never figured out what exactly FCOM does, as the descriptions are imo written very unclearly and there are *a lot* of esps and various download packages oO
I was happy when I got it installed once without making Oblivion crash

Regarding the compatiblity list: I'll think about it. For now I can give you this list (it's more or less the same as nnw's):
- Adash
- Ambient Town Sounds
- Animated Windows Lighting System and Chimneys (looks sometimes a bit funny at night, but works fine

)
- Better Cities (not totally compatible, some windows float in midair at night)
- Better Lava
- Book Jackets: Oblivion Standard Res (load after OWC-ND, Bash tag with "Graphics")
- Brumbek's Sky Pack
- Darnified UI (well, afeter deleting OIO)
- Detailed Terrain
- Enhanced Magic Effects
- Fast Exit 2
- Immersive Interiors
- Improved Facial Textures
- LAME
- Midas' Magic Spells of Aurum
- Orden des Drachen (only German)
- Oblivion Graphics Extender
- Qarl's Texture Pack 3
- Rungs Verbesserte Magiergilde (only German)
- Robert's Male & Robert's Female Bodies (load after OWC-ND)
- Storms and Sound
- Unique Landscapes (besides Arrius Creek and Colovian Highlands, see my patches at Tesnexus)
- Water Reflection Blur
- Weather - All Natural
- Windom Earle_s Oblivion Crash Prevention System
And for all those who want to know more - my modlist:
Spoiler
00 Oblivion.esm
01 GlobalSettingsInterface.esm [Version 1.0]
02 You Are Here.esm
03 All Natural Base.esm [Version 1.0]
04 Cobl Main.esm [Version 1.72]
05 Better Cities Resources.esm
06 CustomSpellIcons.esm
07 DLCShiveringIsles.esp
08 Better Cities .esp
09 All Natural - Real Lights.esp [Version 1.2]
0A All Natural.esp [Version 1.2]
0B All Natural - SI.esp [Version 1.2.1]
0C Immersive Interiors.esp [Version 0.7]
0D Immersive Interiors - Lights Addon.esp [Version 0.7]
0E Better Lava (by elveon).esp
0F Atmospheric Oblivion.esp
10 Storms & Sound.esp
11 WindowLightingSystem.esp
12 AmbientDungeons.esp [Version 1.3]
13 OBG - Buechermod - Bilder - BP.esp
14 ChaseCameraMod.esp
15 Dynamic Map.esp [Version 2.0]
16 DLCOrrery.esp
17 Rund ums Pferd.esp [Version 1.1]
18 Cobl Glue.esp [Version 1.72]
19 Cobl Si.esp [Version 1.63]
** Cobl Main DE.esp [Version 12]
++ Cobl Tweaks.esp [Version 1.44]
1A OWC - Mannequin.esp
1B OWC - Seaworld.esp
1C OWC - New Dimension.esp
1D OWC - ND No Harvest.esp
1E Orden des Drachen.esp [Version Gold]
1F Burg Rabenstolz.esp [Version 1.01]
20 EiAmod.esp [Version 1.1]
21 LordKain_Adash_World.esp
22 Valenwood Improved.esp [Version 1.00.0]
23 Verbesserte Magiergilde.esp
24 Knights.esp
25 LoadingScreens-AddOn.esp
26 KORE- Blood Drinker Umbra.esp
27 Drake Knight Armor and Weapons v1.0.esp
28 Blood&Mud.esp
29 ElsweyrAnequina.esp [Version 3]
2A Elsweyr - Valenwood Patch.esp
2B Elsweyr - HGEC RM Patch.esp
2C ElsweyrAnequinaFemaleBody.esp
2D bbDrachenstaebe.esp
2E PTMudwater.esp
2F xuldarkforest.esp
30 xulStendarrValley.esp [Version 1.2.2]
31 xulTheHeath.esp [Version 1.1.1]
32 XulEntiusGorge.esp
33 xulFallenleafEverglade.esp [Version 1.3.1]
34 Valenwood Improved - Fallenleaf Everglade DV - Patch.esp
35 Anequina-Fallenleaf-Patch.esp
36 xulColovianHighlands_EV.esp
37 OWC - ND UL Colovian Highlands Patch.esp
38 xulChorrolHinterland.esp [Version 1.2.2]
39 xulBeachesOfCyrodiilLostCoast.esp [Version 1.6.4]
3A xulBravilBarrowfields.esp [Version 1.3.3]
3B xulLushWoodlands.esp [Version 1.3.1]
3C xulAncientYews.esp [Version 1.4.3]
3D xulAncientRedwoods.esp [Version 1.6]
3E xulCloudtopMountains.esp [Version 1.0.3]
3F xulArriusCreek.esp [Version 1.1.3]
40 OWCND - UL Arrius Creek Patch.esp
41 xulPatch_AY_AC.esp [Version 1.1]
42 xulRollingHills_EV.esp
43 xulPantherRiver.esp
44 Blood&Mud-PantherRiver patch.esp
45 xulRiverEthe.esp [Version 1.0.2]
46 Valenwood Improved - River Ethe DV - Patch.esp
47 xulBrenaRiverRavine.esp [Version 1.1]
48 xulImperialIsle.esp [Version 1.6.6]
49 xulBlackwoodForest.esp
4A xulCheydinhalFalls.esp [Version 1.0.1]
4B CastleRavenprideDV-CheydinhalFalls patch.esp
4C Blood&Mud-CheydinhalFalls patch.esp
4D xulAspenWood.esp [Version 1.0.2]
4E xulSkingradOutskirts.esp [Version 1.0.1]
4F Unique Landscapes - Cliffs Of Anvil DV.esp
50 EtInArkay-UniqueLandscapes Merged patch.esp
51 Castle Wolfspike2.esp
52 DecoratorAssistant with OBSE v1.1.esp
** Leviathan Soulgems.esp
53 P1DkeyChain.esp [Version 5.00]
54 Salmo the Baker, Cobl.esp [Version 3.08]
** Salmo the Baker, Cobl DV.esp [Version 3.08]
55 MidasSpells.esp
56 Midas Betterholy.esp
57 Midas PowDur2x.esp
58 Enchantment Splitter.esp
59 Pose Thumbnail Poses 1.1.esp [Version 1.1]
5A Eddys Posing.esp
5B Slof's Better Bodies.esp
5C bgMagicDV.esp [Version 1.7DV]
5D bgMagicDVSpellTomes_for_WryeBash.esp [Version 1.5DV]
5E bgMagicDVAddEnVar.esp [Version 1.61DV]
5F bgMagicDVSchnitzeljagd.esp [Version 1.62DV]
60 bgMagicDVNoSorting.esp
61 bgMagicAlchemy.esp [Version 1.57]
62 Better Cities Full - B&M Edition.esp
63 Better Cities - Unique Landscape Barrowfields.esp
** BCBravilB&MFULL-Barrowfields patch DV.esp
64 Better Cities - Unique Landscape Chorrol Hinterland.esp
** BCChorrol-ChorrolHinterland fix DV.esp
65 Better Cities - Unique Landscape Cheydinhal Falls.esp
** BCCheydinhalFULLB&M-CheydinhalFalls patch DV.esp
66 Better Cities - Unique Landscape Skingrad Outskirts.esp
** BCSkingrad-SkingradOutskirts DVpatch.esp
67 Better Cities - VWD of the IC.esp
68 Better Cities Full - B&M Edition FPS Patch.esp
69 Better Imperial City.esp
6A Better Imperial City FPS Patch.esp
6B Better Cities - COBL.esp [Version 2.1]
6C Better Cities - Unique Landscape Imperial Isle.esp
6D bgMagicDVShader.esp [Version 1.7DV]
6E bgMagicShaderLifeDetect.esp [Version 1.68]
6F bgMagicLightningbolt.esp
70 QTdof.esp
71 Cobl Silent Equip Misc.esp [Version 01]
** All Natural - Indoor Weather Filter For Mods.esp [Version 1.2]
72 Bashed Patch, 0.esp
73 Streamline 3.1.esp
Oh and Duke Patrick's mods *seem* to work fine with OWC-ND (just searched "Duke Patrick" on Tesnexus and read the names of the mods)