As far as the generics go, I will be doing more eras, I just haven't gotten around to them, yet.
As for a Saritoga, I might take a second try at that after the MidTNG is done, it's just not high on my priorities as the Nebula is very difficult to work with. You yourself should know that well. That's why I gave up on it in the first place, just too difficult to work with.
Late TNG is not a priority as to be honest LCARS changed very little over that time period. I would have to learn how do do active LCARS on that, as the only difference is the red panels at condition red.
As for ideas, just do them yourself. That's the best way to learn and refine. Take your time, however. Too much too quickly can lead to degridation in quality.