Hello again ! Thanks for playing and for the detailed questions, you're not bothering me at all, feedback like this really helps.
Tools: Epic (pink/purple) is not the highest rarity available. Legendary (orange) is the best you can find.
Succubus Tokens: As of today they have no used, I plan in making something with them in later updates.
Story level: Level 30 is currently the maximum story progression for this version. You should be restrained from gaining xp beyond that.
Waypoint bug: Thanks for reporting it. If restarting the game fixed it, it may be a temporary issue, but I’ll keep an eye on it.
Small tips, the succubus free pass tickets can be used in battle shop to buy Love Letters and Gifts, you don't need to have the tickets in your inventory for it to work. You can keep them warm in your stash.
Thanks again for taking the time to write all this. I hope you continue enjoying the game !