Board Thread:Game Suggestions/@comment-2607:FB90:662F:9D18:CDD4:A60D:17D5:B45E-20181006022740/@comment-29914576-20181018231029

138.67.204.185 wrote: If you could place multiple heroes, they will only level up based on their own pop count, so you can't have 100 Gwendolins all reach level 20 in a reasonable time. The first Gwen will pop the most bloons, and will reach level 20 first. Only when bloons can easily make it past the first Gwen will the others gain experience rapidly. Just distribute it equally among the heroes.

I still don't think its a good idea though.