Meh. I looked into the new version of the 1.11.4 patch and... I hate to say it but tanks are dead for me now as well. Entirely.
Wasting 20+ IC on a single Medium tank and even if it has Christie Suspension and +6 engine it crawls at 5.1 km/h thanks to the speed nerf.
Kinda don't even want to know how Heavy Tanks are. Probably can't get it above 4km/h which is the minimum required to save the design.
They are absolutely not worth bothering with anymore.
Guess I will also switch over to mobile Infantry + CAS now, saves IC for something that actually gets the job done.