Found that the tiile was laid higher than brass flange, which is broken probably due to too much torque on screws. Two wax rings installed to "fix" problem.
Removed everything & cleaned area. Subfloor seems OK, currently drying area with a fan.
1. Best way to raise the new installation a bit so it's higher than the tile and makes for a solid fit?
2. Not sure how to describe this, but I'll try: the drain pipe, or at least the top section of it, seems to be made out of fairly soft "lead" (????) The end was beaten out and around and onto the existing brass flange. It's cracked in a few places, and I can't see what good it's doing. What should I do with this?
Your toilet flange is broken from what you are saying and the floor is now higher around the flange because of tile. Is that correct?
I had the same problem with my bathroom remodel.
You need to install a flange repair ring (Big box store sell those). Here's what they look like. I have a concrete subfloor, so I screwed it into that with concrete screws.
Then instead of a wax ring, I used a newer product that is reusable and is very versatile for heights. It's really cool - it uses an o-ring and a gasket as the two things that seal, and a plastic tube is what helps the height (also available at the big box stores).