Or just slap a GPL and subsume everything within a vortex of FREEDOM, and thusly become a true FOSS dude
Yeah, no. I suppose this is sarcasm, but just in case: not every license is compatible with GPL, GPL has a few versions, and not everything is GPL-3-and-above.
Personally, I prefer Apache-2.0. It just seems more fair.
So here’s the thing. This year I fell in love wih clojure, it’s an absolute pleasure to program in. It’s also a hosted language that runs on java (primarily) or javascript (or a bunch of marginalized things). And honestly, I feel like I can make the java backend run more resource-effecient than the JS one.