My plan is, once my Tomodachi Island has brought 100th baby into the game, I'll deactivate the baby settings.
When the 100th baby has been grown up, I'll delete the save data and starts with the new Tomodachi Life.
All of my new residents should be Valeska (my OC mii) as my look-a-like, all of 10 Wii Music Mii with official names (including Michael Tutori, but I renamed it Sebastian Tutori to sounds more elegant). Then no more addings.
Does it sounds like a good or bad deal?