I think some more thorough change is needed. With the new research update, it is extremely questionable if it is a good idea to build 5 AT at the start, since the infra Lvl1 time and the research time for arty and LT are much smaller.
Although AT is the best defensive weapon against LT at the start of the game, one can argue that arty and LT are much more versatile.
Although AT is the best defensive weapon against LT at the start of the game, one can argue that arty and LT are much more versatile.