As it stands, there is no way to know where the enemy will spawn, and its not that unusual that when 20 tanks suddenly appear, anyone in line of sight is basically instantly vaporised.
This is a stark contract to air assault where the group can split up, you get time to react or even go an land in some cases. It can be close but doesnt feel unfair.
Ground assault by comparison feels like its there to be lost. The sensible thing, for example when heavies spawn is to flank them. But they spawn so close to the base and with so many groups round the map, that trying to do so or be in a position to flank is an instant death sentence rather than a strategic decision. With the weight of firing coming in and cross fire so intense from how close they spawn together and in relation to the centre, that all the cover provided is laughably useless and your positing good or bad, largely based on luck. Its particularly bad if you’re playing a bottom teir tank where you may legitimately be unable to penetrate the heavy tanks that spawn, watching the words “your shell has shattered” over and over again and so just become dead weight. Or alternatively, find WWII era heavy tanks eating FSAPDS and they might as well be armoured in paper.
These enemies should quite simply spawn further away and drive in. Rather then be able to fire at an effective range the instant they appear. This would allow players to actually react to their appearance and position accordingly rather than just having to make do with wherever the appeared. Often being shot in the rear. It took me a while but I understand why so many players just crash they planes into the biggest group of tanks they can find. Because the enemy density and spread is so complete the idea of keeping your tank in a location it wont be vaporised for more than 15 seconds is laughable.
This surely cant be the intended game experience and really isn’t fun for the players the vast majority of the time.