From my point of view it's an entirely different thing though, one 'eats the gods to gain their powers' and the other simply follows a philosophy of 'letting' the old fade, perhaps recreating some elements that might be key to staying 'him', but always replacing old with new over-time. Even if he did somehow do something like Aldrich, it would fade over time as everything about him does, not to mention that absorbing a boss soul and gaining a 'larger advantage' from it, is still designed, at least in my head, to pale in comparison to actually 'being a boss'.
That's one of the things I think I have a problem with this the most, actually. How exactly does taking a different 'philosophy' about something, translate to him inherently changing how souls work? As in, how does he do this? Simply taking a different stance and beliefs about hollowing and the nature of undead, doesn't mean they'd work differently for him, does it? I'm not saying I want a long winded explanation about the entire mechanics, just that he is, fundamentally changing how souls have been shown to work for Undead.
Now, if he wasn't 'Undead', then this whole situation can be avoided by saying he's something else entirely, but I'm not sure how that would work.
I mean, my character, Alia views Undead as nothing more than people, and doesn't have anything against them herself. She basically has a similar view that your character would have if I read Asta correctly, in that moving forward and making new experiences is needed for any undead. Focusing so much on one thing makes on obsessed, and when you accomplish one goal, just move forwards towards another and engage in jolly co-operation with your comrades.
So would that automatically make her whatever he is? I don't really see it as a philosophy honestly, more of just a personality trait. From what you've described at least, anyways.
That said, in 'RP' I would not picture bosses the same way as in the game. In a way, we're all on the same level as bosses [save for the 'giant monster/god slayer/eater/inherently over-powered bosses] in that from an RP perspective you're not whittling away at a health bar, but just trying to break them successfully. Like Ornstein for instance, We wouldn't need to 'beat the fuck out of him' to win like in the game, he seemed more like a nimble but dangerous style, so it'd likely be more about managing to get in 'that good hit' that manages to turn the tide... I hope that makes sense XD
True, true, this is an RP and mechanics are going to inherently work differently.
Also, sorry if this is long-winded, I actually rather like debate, especially when it's a mature debate with someone who's actually thinking instead of screaming obscenities and slurs [curse those youtube feminists]
Ahahaa, no no, it's fine! I rather like debates myself. Its quite difficult to find someone to calmly discuss things with who won't immediately resort to obscenities. It's quite annoying, though I wish I had more time on my hands at the moment so I could do this a bit better xP
I think, so far, my real concern has been said above. How does him taking a...lets say 'keep moving forward philosophy' immediately change how souls work for him? Because as I said, Alia is likely going to be quite of a similar mindset, so would that immediately make her like him?
