Funny you mention some of those things regarding Blaz's sword. I intend on changing up how powering up works in the very near future where it'll be automatically triggered and instead of being consumed on use, it'll be a timer you can extend by continuously hitting enemies, giving you more time and HP in return this will also apply to the fists. Because I'll be doing this new system, I'll be moving the sword throw command to the reload button. In fact the only reason why I didn't do it with v1.5.2 is I've been working at all this stuff enough and I needed to give myself a break.
You're better off treating Blaz's subweapons as tools to set up for making things easier to fight in melee, with the exception of the lance, that one's purely a ranged weapon. Removing the free melee swing from the hammer was intentional to prevent players from leaning on it constantly like a crutch, you get one attack and that's it. Finally, I will not be adding anymore buttons, the mod suffers from that enough as is.
I've had a lot of people complain about losing Doomslayer's bombs and only having the daggers. I might swap the daggers out with the bombs in the future, though this would require some adjusting with the healing effect, most likely lessening its effectiveness with single targets. He'll be getting some more changes in the future as well, as I'm dissatisfied with the "drop ammo on kill" system, I'm going to switch it over to gaining MP on melee strike similar to how Blaz works, and he'll have a two mana pool like Hexen for his arsenal.
Also as new as everything is, I would advise against playing Knightmare until you acclimate to the new mechanics.
I'm definitely not done with this project, and I'll be making sure things feel right.