I wouldn't be too upset if I learned there was a global 33% armor/hull reduction for all vehicles next patch. Close tank combat is the most fun when it feels a little frantic and the only time that happens is when both tanks have shitty armor. This would naturally increase the power of grens against tanks as well, something that everyone agrees is a good thing.
on the fun factor they are just right, vehicles are fun to play because driving around is inherently fun devs need to make the chores more fun and personally rewarding imo
Or, alternatively, infantry are underpowered. Buildings, maps, research, the resource system, everything is balanced around tanks. It's the infantry that are the error.