A conditional no from me.
I would love easier monster rules, especially when building new monsters. The old system was complicated and bulky. At least for your standard encounter monsters.
I wish for two things to be possible though:
a) Can I play as a monster of my choice without much hassle?
b) Can I add class levels to a monster?
If these questions are a yes, then I am all for splitting PC and monster math. If not, then I am strongly against it.
If a monster turns out to be an ally or a particular hateable boss villain, then I want to include it into the game as an equal. One of the best moments in my game was about a former enemy who allied with the party against a bigger foe and became a trusted friend and party member afterwards. A player even decided to play as this character in the next adventure. I want the system to be capable to let the players play monster races, if they wish.
I was actually driven away from 5e by the math they used for monsters. The game was meant to be played as a core race. And even the published player versions of monster races felt nothing like the original monsters. It's like playing a different race. Not only does this make PC monsters clunky, it's hard for me as a GM to design a classed monster too. And if, for example, a Medusa is a Sorcerer, then it should be easy to realise this.
So, if this is still possible, then please give me simpler monsters.
