DND_Reborn
The High Aldwin
Sure, makes perfect sense. No, I don't think more powerful superhero features are needed for martials to make them fun to play alongside archmages, etc., but I have no issue if others want it.Nope, I don't see you as a blocker at all but you also don't really seem to feel this gap as accutely as many folks as you mentioned above. So you are also not the same kind of supporter if that makes sense.
The mythic hero folks don't seem to be advocating for this design to be the only base but rather that is is part of the base line options so that it gets the same kind of design attention and actually turns out well.
So perhaps your branches of advancement would satisfy many folks. But it's a real design challenge if classes from each of those paths could adventure together. But it would be a great modular system if done well!
The Superheroic Martials with Heroic Wizards campaign could be a fun change of pace!
Hopefully anything WotC publishes should get the proper attention and turn out well for that audience. For instance, a lot of people like Tasha's. Frankly, it isn't my thing. I like the idea of sidekick classes and a few other things, but for the people who wanted it I think it works well.
As far as the idea of three branches of advancement, I think it would be possible and characters could adventure together. It would be sort of like the hobbits (mundane), Strider, Legolas, Gimli, and Boromir (heroes), and Gandalf (superhero?) as the PCs maybe?
I guess for me if I want to play superheroes, I just play superhero PRGs, but I get how this is the answer for everyone. Despite the power of high level spells in D&D, I don't see the gap as wide as others do.