I have 4 builders and for now I don't see the need for a 5th one. You might not enjoy grinding walls as much. I think most people don't really like maxing out walls for their town hall level but lots do it anyway. One of the bigger things about town hall 8 that I have not had to deal with yet is upgrading Teslas to max for th8 since they take a long time so I don't know how fun that will be. I would guess that I would just play less since they take a long time to upgrade which would mean I wouldn't have to farm as much.

