I agree for the low bandwidth devices you've mentioned it's fine to hang everything off the one line. There is of course a speed hit for higher bandwidth needs[1] e.g. RAID arrays but that was true for the previous gen too.[2]
Nevertheless I still find it a shame we lost the variety of integrated ports from the previous gen. If we have to buy extra dongles anyway I'm equally ready to check out competitor panels.
AFAIK the LG 5k is the only panel offering 87W power output, right?
[1] http://appleinsider.com/articles/17/01/07/review-lg-ultrafin...
[2] http://www.macworld.com/article/1163773/storage/thunderbolt-...