Let's look at a lowly, basic goblin. That's a DC 17 Acrobatics check to tumble through its space. So the iconic Merisiel (a 1st-level rogue) has +7 Acrobatics - a 50% chance. If she fails, that's the end of her action. Granted, at 3rd level, she has a +11 to Acrobatics, which is a 70% chance to tumble through the goblin's space. Sure, that's a pretty good chance.I don't know what her particular rank is at, but I watch my wife's rogue do that multiple times a fight literally every game. So your characterization of that is clearly incorrect and/or based on some set of assumptions not self-evident.
(And no, she doesn't have hot dice; if anything she runs to the contrary).
But let's look at her at 5th level (+14 Acrobatics) vs. a grimstalker (5th level creature with a 25 Reflex DC). She has less than a 50% chance of tumbling through. She's just at a 50/50 chance versus a djinn (24 Reflex DC).
And if you're not facing opponents of your level or lower, the chances drop significantly.
Sure is, according to Archives of Nethys.(and I don't think invisible is a condition in and of itself).
Well, if you're getting three times the number of Hero Points at the start of every session, that might explain why you think Pathfinder 2E is fairly balanced.Our GM's just given us three up front at the start of a session normally, and I don't recall anything particularly untoward happening. I'm not sure I've ever seen someone need to use one to auto-stabilize.