Okay... I like this idea with the small crypt in the front! I was thinking on incorporating something like that at some point- Once some of these new plants settle in and get a more 'final' placement, perhaps I'll add some parva.I like the light coloured sand too, maybe throw a patch or two of dwarf crypts like parva just to break it up a hair? Probably not needed as the plants in the middle / center start filling in though....
Actually a single, large plant of Helanthium reaching up from the dark back into the light would look pretty cool in my opinion (since you were asking for opinions ), something like this:
I do have a small bit of Helanthium bolivianum "angustifolius" panted right now, in front of the wood on the right. In the past this plant has done amazingly well for me, but the past 6 months or so have been a stuggle. Hopefully this will bounce back, as I agree that would look great!
@Immortal1 I like the idea of the buce all over- let's hope I have good luck with theses and can propagate them. If it does work, perhaps a couple more variety all around!