Walls: select row -> upgrad entire row
Wouldn't it be cool if you could upgrade an entire row of walls at once? I recently upgraded th to 9 and am in the process of upgrading all my walls to lvl 7 (i know, i know.... 'Don't go to th9 untill you've maxed out th8 etc etc....') but anyway, when i got my 25 new walls, at least at the beginning, when they're cheap, i think it would've been useful to have the possibility to upgrade an entire row at the same time.
since you can select an entire row to move it around, why not have the possibility to upgrade it as if it were a single unit as well?