It sounded like you only had 25% skinny bass instead of all of them. That is making progress. The ones you cull are not doing much anyway, I'd take the skinny ones out. They are not helping at all. Just surplus slot bass.
I'd catch and keep every Pike, muskie, pickerel, and crappie. All of them. You will at least slow them down, and not much is going to eat them. If they have lots of babies how many will survive to become breeders? Guess time will tell.
Mainly I would remove the most competition for the forage, of undesirable species. If that is what they are. I think that is what you state on your priorities, fishery and bass. On a body of water that size it is going to be tough and a ongoing effort. No overnight fixes here. But only 25% skinny bass vs 100% seems like progress towards your goals to me.
