Yeah, in all honesty, a lot of the maps we have now, you could probably drop her on one path with NO heal support and keep her healed with just regeneration effects like AW Sophie/Farne and "Healbombs" from AW Iris, Camilla and Liana. Those, combined with her increasing bulk, would keep her up on the majority of maps we have (since her offense is good enough to kill a lot of stuff before it gets very many hits on her). The bulk we're talking about when we say "legit tank" is rarely needed in our current state of game (and we've got Bernice, Gellius and Deine for that, with the "gimmick tank" Karma an option for players who have been around long enough; Sophie's an option too though even if she doesn't die she can only tank for 30 seconds max due to Angel mechanics)