Thanks for the kind words and happy you enjoyed it so far. The game's gotten pretty long already with almost half a million words 😅
Post is totally fine, you even mentioned spoilers before giving them. Also... ANSWERS CONTAINS SPOILERS!!! BEWARE!!!
1) Yup. Getting the girls tested for their magic potential will be part of update 7.
2) That should be the maximum. Maybe if one REALLY grinds streaming a 35ths joins (but no story scene, just a nameless guy).
3) Jade's maximum is Lvl4 currently. If the moving thing is still there I have to check it and remove it once completed.
4) For now that's it. Intermediate course unlocks the upgraded potions and the first simple dates. Advanced course will probably follow in update 7.
5) No follow up yet 😔 Last Stella romance scene is the training scene in which Gina basically says "No, we're not fucking before I get my cutesy date first!". And their first proper date will be part of update 7. So the current maximum for affection ratings are: Stella: 3.5 ; Jade: 2.5 ; Aline: 2.5 ; Akari: 1 ; Philipp: 3 (Yup, Gina likes boys too. She very open minded there 😅 I mean, with how she drools when Handsome Mask appears... also Phils second date has Jade and Stella in it. It's one of my favorite scenes). Oh, and romance route with Mike got dropped due to a Patreon vote. He now belongs to Stella if Gina doesn't pick her.