Two major points I wanted to bring up before I forget:
The boss rooms that involve crates are still completely broken. Mainly, the boss AI simply doesnt work here. It seems like I have all of 5 seconds to kill the guy, or he *will* get stuck UNDER the crates, and then manage to wreck every single one of them in one go.
In the one I'm stuck in, there's magma underneath (and hardly any room ABOVE the crates to even jump over the guy or something), so if he isnt killed INSTANTLY, it's over. And I actually cant even hit him, with anything, due to the screwball way he moves, and the lack of space in the room.
And two, the Research Stations are still pretty broken. I'm fairly certain that the game is still not removing extra-spawned enemies from the rooms after an attempt fails, and the spawn rate is still kinda overboard. The one that I have available to me has a number of spots with those octopus things that shoot the blue shots, and normally this wouldnt be TOO bad, but the RNG was nasty with the spell classes for my current tier, and the only spells that are particularly effective against them are super-close-range ammo shots. So it can take a bit of time to clear each octopus, and due to the area (and other enemies) simply bypassing them is not an option. That the "escape" spawner keeps farting those jumping fireballs at me really isnt helping. As best I can tell, the spawn rate hasnt changed at all.
At the moment, I cant really advance much, particularly as that boss is the one in the overlord's castle, so I cant just go to a different area or something.
In all honesty, I dont think the crate rooms are the best idea for these bosses; like everything else in the game, they seem very much designed for slower, more careful combat.... cant really jump around crazily and just spray bullets at them, and if even a few crates break, it can end you really fast. Doing things like having damage spikes on different bits of the floor, or having some of those blade traps around, might be a much better way of adding environmental hazards to the arenas.