Great suggestions, tscharf and Noto. As far as emergents, I was thinking it would be nice to get some sort of lilly/lotus, but I don't want it to completely overtake the water section. Might do some sort of floater instead, but I think the lilly would look best, and the stems would give the fish some more cover. I might add in a couple of hydrophyte's riparium rafts in the back so that plants can start out growing there and hopefully work their way up the background.
I'm going to try some of the java fern trident and riccia emersed. Bolbitis would be cool too. Pitcher plants would be my carnivorous plant of choice if I can get one to survive in there as an epiphyte - I love the way those things look.
I may add in some more loaches. I like the look of kubotai. For long fish I was thinking I might get some sort of spiny eel (not fire or tiretrack - I think they grow too big) or some ropefish. I'd like to get some dolphin morymids too if I can find them and maybe archers. My wife thinks a stingray would look great in there and I agree, so I'll be keeping my eyes open for a male hystrix.
I think dartfrogs would be awesome (I've been posting this build journal on dendroboard as well), though there's a lot more water in the setup than is typical. Once some floating plants get established it would probably work out. I also don't want to deal with breeding fruit flies in my apartment right now. Maybe some time in the future.