If look at it their poorly design
Burrow is poorly design only two units can actually use it roach and infestor.
You can make an argument say banes can use it. Only issue is you have baby sit and you can use macro of burrow. It’s not even good A.I script. It unburrows and delay trying to pick target. It’s supper lazy if programmed it to explode once unit enter and is about to leave. For example once unit touches edge and walks in right before that walks out of radius.
Another thing be nice edge radius once bane is burrowed you can see where place another one can max killing radius.
They never even bothered to make it better like use as decent trait to add micro to game. I guess they were like why bother since Terran has cheap scan. I wonder hey 50 to low especially for mid to late game. Heaven for bid make 100 so some thought has to put in game.
I know it’s possible to be out 50 energy right when DT comeing but very rare. It should cost Terran more use scan then does now.
Now lair problem Zerg is only tier race but problem is they also tied to queen. Now they did time it round you can build queen build lair build spire you can get corrupter vs bc rush.
But problem anything else you can’t you have to hold it with queens which is problem more queens means more delay.
I think better solution was tie lair tech to queen. I know timing might adjusted 21 secs either add to spire, infestor pit and maybe to hydra den.
To get hive tech would be lair requirement but let face in wol and hots , hive was not that important tech.
Upgrades same lair locked except bane speed overlord drop and overseer.
Next topic overlord drop why so slow after upgrading should be at least 3.5 not kept at 2.6.
Terran medivac speed 3.5 and cost 100/100 . Can heal and has boost to increase to 5.
Protoss has flying prisim cost 250/0 speed 4 and after upgrade comes to 5 and can warp in new units.