Hackable: An Alternative Saving Throw System for Dungeons & Dragons 5th Edition

I played DnD 4E for about a year. It's not a bad game and if I ever want to run an Exalted-style game, I will use it.

One of the rules I liked in 4E was how it handled Saving Throws: you rolled a d20 and had to roll a 10 or better. It's DnD 5E's Death Save mechanic essentially.

I'm contemplating using this in a future DnD 5E or even an OSR game. Not that I hate the current system, it's just an idea I'd like to see in play. Under this idea there would not be an proficient saves and level wouldn't be a factor (although I have toyed with proficient Saves adding 1/2 Proficiency Bonus, but not Ability Mods).

We'll see if my players complain.