I have no idea what you guys are talking about. All I know is that I have a much, much higher win rate on Moray Towers. On Walleye Warehouse it's stupidly easy for one team to corner the other, leaving them with no apparent escape routes. Contrast this with decent stages like Blackbelly Skatepark and Moray Towers where even if the enemy team manages to claim your side, you still stand a decent enough of chance of being able to move past them unscathed.
As a forewarning, I think the differences in opinions are probably related to our choices of kit. I personally main rapid blasters and excessively stack damage up, and sometimes also use custom jet squelcher with lots of swim speed up and some damage up. Rapid blasters are good at shooting up to harass enemies, but are generally terrible at painting walls.
I think old towers was probably very congested, but I agree that the new side ways are a very welcome addition. On old towers, the only way into the enemy base was basically through mid, which generally meant you were going to fall in and hope that the enemy chargers were asleep or distracted. On new towers, the side areas are slightly enlarged and also have little walls, so you can actually get to the ground floor and sneak into the enemy side much more reliably.
Even so, I think the visibility from the perches over mid on towers is still too favorable for long range weapons. If team A has long range that team B does not have a consistent answer for, then sneaking into the enemy base gets a lot harder for team B. Like if I am using custom jet squelcher (which I'm likely to do this time around), and the other team has no way of keeping me in check via range, then my team's half of the map is basically unreachable for them, and my team can always jump to me.
As for warehouse, I think spawn camping is generally pretty rare there. Unless something horribly wrong happened, the enemy shouldn't be able to get past further than your pit (the small area that has two tarped ramps and connects to the right alley). Almost all the time, even if your team loses control of mid, it should be possible to go from your spawn to far left and get into mid from there, or even try sneaking into the enemy's "right" alley if you're feeling particularly cheeky. And if the enemy team can't get past your pit, trying to control your pit is difficult; it's a lower elevation, going further requires going through a narrow tarped ramp, and it's right next to a raised box where a charger can shoot from.
