Thx Alex
After reading/writing this thread today I spent some time just relaxing and watching my fish swim around...I figured that if the barbs or cories were stressed or needing more hiding spots they'd likely always be in the plants. But they're not, they're happily swimming all over the tank, the barbs spend most of their time at the top actually and the pandas are well, everywhere, and as for the DG he's just either chasing whichever fish has most recently gotten in his face or continuing his eternal quest for food...
The panda with fin rot is healing up nicely and once again challenging the DG over bits of wafer, so it seems all is well and relandscaping is not required.
Guess that settles my question

The feedback is muchly appreciated though!