He is an amazing character and all but it is a crucial part of star wars lore. All in all, did he deserve it-No but I would be sad if they didn't kill him off.

Yes

"Bro, it's a canon event."

Maybe

He should’ve, had Mace not gone for the head.

But then again, he’d be a dangerous threat during the Clone Wars so this is somewhat necessary.

^True, but threats are needed to keep the story interesting

He survived through the clones and Boba. I guess you could say he lived the most out of any Star Wars character..."from a certain point of view"

No, because that’s his end of the story