Not only is the tank upgrade worthless, its actually a nerf. Let me count the ways...troop space increases from 6 to 10. Thats a 66% increase(thats bad). In return u get 77% more dps, 69% more hp, 66% longer training time. So up to this point if it was straight 66% across the board it would be a wash. we do have an 11% increase in dps(for a unit whos dps sucks in general and sucks extra hard vs economy). A 3% increase in hp. Heres where it all falls apart. We have a 100% increase in food train cost. Frequently my food is maxed out. But if i do deplete my storage a unit costing 2x food will slow down the refill. Tanks are more vulnerable to cannons and spike traps. A heavy cav is far more likely to be overkilled by a cannon tower or spike trap. Therefore wasting a % of the cannons dps. Which imediately makes the 3% hp increase of the tank a net negative effective hp. Since tanks, cavalry are the bullet sponges of the game their #1 stat is their hp, or effective hp. Both heavy cav and tanks are past the breaking point of rendering redoubts and mortars useless. So the fact that heavy cav have more models on the field and therefore take more damage from redoubts and mortars is insignificant. And the most damning part for tanks is the fact that they have a range increase from cavalry. This is bad. Cavalry with melee range attack will hug the wall. They will be the closest model to the defenses drawing aggro and performing their bullet sponge duty. Tanks with increased attack range do not in general attack over walls...that would be good. They use their range to attack walls. Which puts the bullet sponge closer to cannons, musketeers and such. So now aoe damage from mortars, redoubts is landing more on the units the tanks are supposed to protect. Or in the worst case scenario it puts fusiliers who still have melee range as closest target so now they draw aggro instead of the tanks. So a tank upgrade fails in the most important way. Their effective hp is lowered. And they function worse to draw aggro. In return u pay 2x food train cost, and gain 11% on their least important stat dps. Anyone see an angle im missing? Because as things stand. Im inclined to leave my army with heavy cav until right before global age release. Since presumabely global age tanks will be enough of an improvement over heavy cav to be worth it. Even if tanks are a nerf. Mostly this just goes to show how poorly bhg understands the function of their units. And how to balance stats on the meta level.