I think your tank looks beautiful. If it were mine, I would not rescape it! I like it as is, but if you don't like the ludwigia at the back right, you could change that out for something different. However, I wouldn't change it, but would just prune it a bit, particularly on the left hand side (almost middle of tank, in order to allow the eye travel to the back of the tank). The only other thing I might do, is add a bit of colour in the foreground. You have a mix of colours in the background, and the mid-ground, but a line of only green across the front. Maybe a colour at the right front corner might add a bit of interest.
However, as I said initially, I think it is a gorgeous tank. Well done
