K, one more thing I definfitely want to hit here, because it'll come up again in BDH and I want some whys and wherefores out of the way.
On the refresh action, while I do see the merit of factoring in more than just Con score to determining tankiness, doing it by class level is just not going to work to my satisfaction - NPCs don't have them. Doing it by fraction of total HP not only gives me 4th edition D&D hives, its also gonna use a division calaculation (preffer to avoid thouse) and its still not going to parse well with NPCs. It also has issues that many formulas result in a number too low to be pertinent at low levels and scales (too) rapidly as level goes up.
So... What I can see being a useful curve to add to the mix is Fortitude save bonus. Comparing vitality and fort save among base classes we find~
High Vitality, High Fort: Soldier
Medium Vitality, High Fort: Explorer, Scout
High Vitality, Medium Fort: Lancer
Medium Vitality, Medium Fort: Assassin, Captain, Courtier, Priest, Sage
Low Vitality low Fort: Burglar, Keeper, Mage
I'm totally comfortable with Explorers, Scouts, and Soldier all falling into the top tier of Refresh (moreso than only Lancers and Soldiers quaifying). Lancers have a class ability that makes their Refresh better, and Explorers get extra Con as a classs ability. All the skill monkeys had low Fort save bonuses anyway, so that lined up neatly. Overall in think it works pretty cleanly as a way of respecting class choice.
And hey, its another great reason to take Great Fortitude... one that makes surprisingly good sense just going by the name