I have quite a few genuine adfree apps and games on my phone, done by developers who created them because they had a passion to make something useful and give it away for free.
RetroArch, Firefox, Frozen Bubble, Connect bot are just some of the ones that I know I have installed and don't have ads.
Cutting the character limit to 30 will mean lots more apps all going by the same sounding names, and this is bad enough already on the Play store.