thing is, that 'little' killing power the live B-4 has basically just got increased by a factor of 3 in the beta... at least in cases where you can't leave the killing zone fast enough, such as being shelled by a B-4 barrage upon retreating back to base. i can already feel this potentially becoming an issue in 1v1s and i don't even want to imagine the flood of tears about to drown this forum once multiple B-4s start raining death in 3v3 and higher on a regular basis.
now don't get me wrong, i like the fact that the B-4 might be more than just a meme-cannon in 1v1s if the current changes go live. personally i also couldn't care less about the havok the reworked B-4 may be causing in 4v4s since neither do i play nor enjoy watching games in that mode - but there are a lot of people who do and hence a rework of some sort might turn out necessary. added utility in exchange for raw killing power could be one
one way to approach this without upsetting the balance in solo and team games too much.
You are absolutely right about 3v3/4vs4. Can we just keep it useful and hardcap it a 1? I know there are situations where it will be decrewed and you could build a second one if you wait to crew it again. But spam would be hampered at least. You could further obstruct a decrew mechanic, if you put in a timer, so it can't be build about 60 to 90 sec after you lost your B4 (similar to Heavy Tank call-ins).