I've noticed some issues behind people in Blitz matches who camp the bot gates. That is, sitting on the gate at point-blank range with a Firebase or deployed Gunner and hogging all the kills. I personally see this as cutting out any teammates' capacity to "get in a shot." I know it's about individual kills and cash as much as it is about being able to survive the duration of rounds, but what motivation do people have to continue the Blitz match if they can't participate? So, to prevent this, Uber could restrict Firebase deployment in blitz matches to anywhere inside the initial "base" perimeter, or put up some kind of barrier at the ends of the "bridges" connecting the bot gates to the main platform (where the Ejector) is located (sure, then people camp said barriers, but at least the angle of fire will be wider to allow for greater shot placement).
If you play some of the harder blitz games then bots spawn from several gates instead of just the main two. You may have to wait until you can get some shots in, but the bots from these gates are generally weaker/fewer than from the main gates anyway (so lack of upgrades won't be a big deal). I also recommend playing with a team that communicates, since blitz requires more teamwork than crossfire anyway.