I was going to ask why Anum and the titans was an issue... and then I remembered. And then I remembered what caused me to start this thread - that I had Sereqet pushed into a pit by Septimus in my last game.
Argh! I forgot that titans can't be pushed and that Sereqet is a titan!
Deep breaths... alright. My point that I was going to make, I think, was that pits seem very all-or-nothing, which can be very dramatic, but I think isn't always the kind of game you might want. It's very dramatic, but you don't always want games to be super stressful like that.
By that I mean that, as I see it, you will typically end up in a situation where one model is near a pit, and an enemy model plots to push them into it. So the enemy model goes up and makes an attack and hoping for pushes. If they succeed, then they defeat the enemy. If the attack fails, then the original model can just use their free move to walk directly around the enemy model, and now try and push their former attacker into the pit. So by trying to take advantage of the pit, you also make yourself vulnerable to it. It is a good "risk vs. reward" mechanic - but it is just extremely hazardous, and the game can be decided very quickly that way.
So it seems like pits are great if you want a high-tension, high-stress game - but I'm not sure I want that every time.