I believe I added the complete set of the Telvanni armor. There's no cuirass or greaves, just a skirt and a shirt, which I've already added to the upper tower on the bed.
Actually, I just added a forge to the dungeon, lol. I didn't add a repair service though, because there's already an npc in the barracks with that service. The dungeon is just meant to look pretty, get you from one place to another, and be a source of random encounters. It's atmosphere.
I'm not going to change the trial though. That was way too much work to make the dialogue run smoothly and I don't want to introduce any new bugs at this point.
As for the mannequins, if you've already filled the slots in the treasury behind the moving screens, and filled the lower tower alcoves, then...um...maybe decorate the dungeon which you don't visit very often? 

And Llruvii is referring to Sara.
As for the RoHT teleports, I've started adding them, and it's getting rather complicated. For this reason, you need all four towers built before you can order construction on the new teleports. LLunela will explain that this is because the current network is becoming unstable with all these added teleport platforms, so she needs time to research the problem and re-engineer it. The last, Telesero is easily added later though.
I'll give you a sample of how complex it gets with adding four or five towers each at random intervals, and making new menus for each possibility:
 TA=Tel Azrua, TD=Tel Dwemeris, TK=Tel Koj-Ruskthss, TL=Tel Llarelah, TS=Telesero1	TA2	TA	TD3	TA	TD	TK4	TA		TK5	TA	TD	TK	TL6	TA	TD		TL7	TA		TK	TL8	TA			TL9	TA	TD	TK	TL	TS10	TS		TK		TS11	TA	TD	TK		TS	TA	TD		TL	TS ;not possible because TK is required for TS12	TA		TK	TL	TS	TA			TL	TS ;not possible13		TD14		TD	TK15		TD	TK	TL16		TD		TL17		TD	TK	TL	TS		TD		TL 	TS ;not possible18		TD	TK		TS19			TK20			TK	TL21			TK	TL	TS22			TK		TS23				TL				TL	TS ;not possible					TS ;not possible
So those are just the number of variables, requiring 24 separate menus (the 24th is the regular menu with no towers built). I won't even get into the logical gymnastics required to check for all of those and change the menu options accordingly in the actual script. Instead the options will be limited to:
Are the main four RoHT towers built? Yes or no.
If they are built, is Telesero builts as well? Yes or no.
Simple (actually, my script is still very complicated, but it's relatively simple).
Actually, if you don't mind doing a bit of testing for me, I'll send you the new RoHT compatibility add-on once I'm finished working on it.
Edit: I've finished, and my tests are complete. The new doors are all working. Once any of the towers are built you can talk to the tower owners about building the teleport platforms. Talk to Llunela Hleran about building them, and she'll tell you she can't...until you get all four towers built. Once they are completed, talk to her again and she'll have them built in a week. Telasero is added afterwards. You'll have to talk to her again once the others are built to build this one. It will take only a few days, because she's already worked out all the kinks building the other four.
There is no quest so to speak. Just ask her to build at the right time, and it will be done. I didn't want to make it too involved since it's only an add-on.