When searching for bases to raid, have it so you have to select a troop first
Occasionally I'll be searching for bases to attack and I accidentally place down a troop when I meant to hit "next." I noticed that this happens because the game already has your first troop selected for you. I think it would be an easy and logical fix to make it so you have to tap the troop you want to place first before you can place it down so that you don't accidentally waste trophies on a base you didn't want to attack.