I would just keep things growing in thicker and maybe remove some of the limnophila Aromaticoides so it does not touch the front glass, and so gloss can cover the whole front glass. That is a personal thing there.
The plantings on the left look a little thin and haphazard imho. If it were mine, I'd maybe plant something tall behind the wood (grass-like perhaps), then create a casding effect in front of the wood leading to the glass. On a 75 you have an excellent tank to create a good sense of depth with.
I'm nursing some blyxa japonica plants that are going to go in front of the limnophila/stellata eventually. I agree the left side needs work. The rock is unfortunate, but necessary to hold down the driftwood that still is driftwood in the truest sense. I may move the ulvaceous plant into the left corner to fill things in. How's that sound?