>>25052500I cannot see any negatives here. All it would do is make the games more interesting at the very least.
Every Pokemon would still have their original evolution lines, but they could potentially become others as well depending on what your team needs at the time.
The games being more challenging would make this mechanic fucking great, allowing you to adjust your team as you go along, rather than having to dump a Pokemon and switch to another.
Not that that's necessarily bad, but.
