Another thing to conisder. This is the devil you know, very well.
Nothing stops you from looking and considering other employment, walking out of interviews with salary and compensation numbers available. It's great to look around and survey, but it brings up a few really great points:
First, with the other potential employers.
Since you're already making a decent amount of money, and really do have little to lose, you can walk in with your head held high. Not cocky, but confident. If the interview goes bad, or the company in question tries to lowball say, compensation, well then, you don't have to bow to the wish. This makes you a desired commodity, and you can use that to bring confidence. It also means you don't have to take the first offer, and you really can carefully inspect, consider and take your time. Like buying a car, or going through the produce isle at the supermarket, you usually can win by taking your time, picking the best looking fruit, or coming back later in the week when it goes on sale and is just as fresh.
With your current employer, it's twofold. First, it's a great distraction to look beyond your borders. You can compare other operations, find out the "brown grass", read through what bullshit makes up well pissed on greengrass, or astroturf, and what really truly might be a good fit. That's part of taking the time. But it ultimately lets you dream a little, forget to be such a go getter at your current job and relax about this. A project being a wee bit late, or the pressure put on you now, as you're about to walk out the door, might just allow you to push back, stand up for yourself a bit more, and actually define your current role. When you're a slight bit less invested (but by no means malicious or actively trying to do the corporation harm) you might find you enjoy your job that much more, even if projects run over by 20% and the widgets aren't made quite as quickly.
Secondly, there's the leverage part. This is my favourite, because it's the devil you know. After all your research, and preferably with the right offer in hand, you can walk into the office of your boss (or their boss) and say look, no hard feelings, but here's what I want, plus 10% (20?), I want X team, I want these assurances. You like the corporation, or you wouldn't have stayed 16 years. But the position they put you in, they probably didn't overtly realize they were shovelling you into this turd corner. They just know they don't have to worry about the turd in said corner anymore. Either way, you can negotiate your way out of it, respectfully. If they balk, and you call their bluff, you probably were getting taken advantage of. If they seriously consider and counter proposal (hence why you mark up a bit) then they want you. It's your game to play.
All this assumes you're not too burnt out. But after some weeks of looking, and the power back in your hands of choices in your future, plus knowing your personal worth, well you might feel a lot more relieved. And who knows, if you walk in with a proposal to the boss, they'll probably respect you for it. If you relax on the projects right now, most people above you won't mind, and you won't take it personally. And by looking beyond the borders of your company you get practice interviews, you get to consider options and most importantly, you're back in the drivers seat the whole time.
This is a great opportunity. No place to go but up.