In a LMB/BG pond, you are mostly going to catch BG - that's how predator/prey numbers work.
I've read that you didn't like how things were and that you are (at least) worried about how things are now, but what do you want the pond to be? Define that and you can get some tailored advice (some of it useful) instead of having us tell you what we'd do to get what we want in your situation.
If you want to emphasize large bass, you might want to add some new LMB genetics, but otherwise you are set.
If you liked catching tons of LMB, but want them bigger than stunted - well, that ain't gonna happen.
As Bob Lusk always asks, "What are your goals?"
From reading the forums here, I definitely understand that our goals dictate our process. As I stated in the original post, I don't necessarily care about having huge LMB, but I really want to have a large population of healthy fish that will bite lures. That's why bluegills aren't scratching my itch. So, with that said, I'm not 100% certain what is the surest way to achieve that goal. I'd be happy with a lot more LMB... but also SMB or YP, or something else.
It seems like maybe I just need to add more LMB back into the pond, in addition to some YP and GSH. If I do add more LMB, here are my questions:
1. How many of each size should I try to get my hands on?
2. What time of year would be best to add them in? This fall, or in the spring pre-spawn?
Thanks!
