I think for many of us Skyrim will be the last, if the sheer quantity and persistence of ck breaking bugs are repeated in the next offing. There is much that could be better in Skyrim so far as modding is concerned. Nifskope, max and blender importers and exporters, lod working without farting around with sorcery, trees actually showing up in the distance rather than being a waste of time in LOD and so on and so on. As the months go on I am hoping that fixes will be made for all of this, but currently nifskope has grinded to a halt, blender exporters havent shifted in months and the max exporter is like a bad massage with no happy ending. That the CK is supposed to be a modding platform is in many ways more insult than joke.
Its like opening your present at christmas, finding an empty Action Man box and your Dad telling you it's the Action Man deserter kit. You know someone is taking a piddle down your back and telling you its moisture dripping from the ceiling.
But I am plodding on, gradually getting somewhere in the vain hope of nifskope and exporters, tree LOD, regions wont mess up, quests when I make them wont collapse in a heap, npc's wont disappear, buildings will be where I put them, the distant textures wont be psychedelic and so on.
And still the Bethesda cheerleaders dance and wave their little pom poms shouting, "yay Bethesda, thank's for the sword, yay yay Bethesda we're not getting bored, go go Bethesda ignore them all, moddings no farce, go go Bethesda, ignore the modders youve ....... up the ......"

Anyway, seriously I think sometimes these bugs are owing to pushing the CK beyond what its supposed to be able to do, for modders at least, so we dont have a call on Bethesda to fix them. But it cant be denied that there are things in the CK that make it unfit for the purpose it was claimed to fulfil. Having sections of the CK such as LOD that dont work, navmesh still broken and various other stuff that is crucial and central to modding is quite simply wrong. Time will tell. I still tend to favour the idea that under it all Bethesda remain a good company with good intentions. I hope I am proved right, but as I said, time will tell. We are all going to learn much about the future of our interest in TES in the next six months to a year.
I wouldnt go so far as to say they have been much more supportive this time around, but there has been more support than for Oblivion. Mind you, the CS for Oblivion had all the basics (or most of them). LOD worked, Navmesh worked, voices took effort but worked, heightmap editor worked, quests generally worked, npcs worked, things didnt disappear in the render window, nifs were in a workable format.