Honestly, for the concept that it is and how bat shit crazy it sounds from the premise, i like it! It's in line with the outlandish concepts that evil dead has done before with the book, this will be no different.
It could be a really fun read, though the deciding factor will be how strong the writing will be and how the dialog is handled with these other personas.
I like the idea of a small ash actually being on his side for once, that could lead to some interesting situations plus the talking chainsaw could be interesting as well since we've seen sentient household objects before in this franchise, so putting that concept with his own chainsaw could be really fun or fall flat on it's face, we'll see how it pans out.
I actually like the fact that the skeleton looks like the ed2 cover skeleton, that's a really nice touch.
I'm already imagining his chainsaw bickering at him or complaining that it's got dried up blood or guts in it's gears and needing a tune up or it freaking out at being shoved into someones stomach or it having a internal conflict of it's use about chopping people up when it was originally used for cutting up wood.
There's a lot of dark comedy to be found within that idea alone, i hope they capitalize on that.