I think area attacks should have a max of 5 targets 

Area damage should have a max amount it can hit like 5 troops or building

I notice that there's a lot of empty cities that are left there until the battlefields ends.  I would like-that after some time-those surrender cities would be turn back into the normal level 1 rebels cities. It annoying for those who see open cities and who refuse to surrender can't claim victory because there aren't no cities  as there are a lot of white flags and  enemy cites remaining.  

Could there be bridges in the map with little rivers so that the tanks could cross over the bridges or try to cross through the river, which would take a bit longer. 

MY WIFI IS IN VERY GOOD CONDITION,SO NO LAG OR SOMETHING,JUST THE DELAY FROM GAME,AND IM EVEN CAN'T ORDER MY TROOPS,AND TOOK A LONG TIME TO SEE MY TROOPS MOVING,AND IM GONNA SAY IT AGAIN MY WIFI IN HAVE A VERY GOOD CONECTION I CAN STREAM YT AND THE OTHER WITHOUT DELAY OR BUFFERING,SO PLS FIX IT ASAP!! IM AT THE MIDDLE OF BATTLE!!!!