Like you, I am excited about it for the sake of the community, though I'm hard pressed to find any reason to play games on my Android phone as it is. Android games are either ad infested junk that isn't interesting to me, or open source and playable on Linux already.
I've messed around with Waydroid because it sounds cool in theory, but every time I get it installed, I'm like "now what?" I can't think of anything to actually do with it, so I imagine it'll be the same for Lepton.
Still, very cool to have the options, and I'm happy that Linux is getting more attention as a preferred platform such that gaming companies recognize the value in supporting translation layers for it.