I like it too but I would like a couple of little bits of green in there. I've got some micro sword and a couple of bigger swords that will fit the bill.
The heckelii don't need plants, and in a real biotope apparently wouldn't have any, but the panda cory that are going with them need plants to spawn on and the L140s need wood to chomp on. I'm aiming for tasteful minimalism I'll only be using root balls too as the aqua mix was a pain in the old setup.