create more power ups for players with high levels because otherwise it is monotonous. At that point, set that players with high levels can not attack the smaller ones and vice versa.

https://wanderers.userecho.com/forums/1-general/topics/128-speed-upgrade/

Someone already suggested this

Man, you just posted 14 topics, and none of them had a description. Next time, how about creating a couple of well thought out and descriptive posts, instead of flooding the front page with posts that only give 1 sentence of information?

The description, if
 you read, it's in the title itself ;)