All excellent choices from the ones I know. I particularly love galactic battlegrounds (also you're the first person I've met that's ever heard of it!) And Episode 1: racer.
You seem to have good taste, so I'll check out Rogue Squadron and Phantom Menace!
And obviously these are just my opinions, I can't fault anyone else for what they prefer.
My personal overall fav is Kotor 2. It's so good.
Oh my god, you are a legend. Thank you so much for letting me know about these mods. I didn't even think to check for them.
Going to have an insane amount of fun with it again!
And yeah. So many people that I recommended it to thought it was just AoE 2 again. But as you say, it actually has a ton more complexity. And the map editor and storylines were pretty awesome too.