Doing a personality test might be able to work and I think I might know how to implement it.
I do have an option to turn elements and a bunch of other stuff random for enemies and player characters, I could work around with it and make choosing a specific element (It would require a lot of work on skills and other misc things)
As for buying places like businesses and stuff I'm not sure that really fits into this genre of game, being a Tower Ascending kinda game.
Each section of the tower (first teleporter is 1-10, second is 11-20, etc.) is fully replayable, and enemies should scale to your level or close to it. After I create all the floors I planned on making a Restored Nexus Hub that has more areas/levels/floors that you can explore.
All in all I can definitely try some of these suggestions, others I probably won't since it wouldn't make much sense adding it in (purchasing businesses/houses.) Although, who knows it might come around when the hub is completely restored. I'll see what I can do and thank you for your input and thoughts! I truly appreciate it.