I also love jump and push.
The first time we saw thunderwave in one of the trailers/livestreams, my eyes lit up immediately. Seeing push there as a basic ability was even better. And it doesn't always work, Athletics has some degree of influence on it for sure.
Jump is a good way to have a disengage or a dodge without having both...but I would like a Dodge Full Action because sometimes during positioning there's just nothing for my characters to do other than a ranged attack (kinda hard for the clerics without slings in the game yet).
But the jumping navigation outside of combat is great!
Especially in the hag's secret lair. Took a few reloads before I realized there was a mostly safe path via jumping and a couple of perception checks.