It shall receive little praise, but it's not unbearable so much as pity-inducing. It gets way too cheesy and unwieldy, like nachos with 3 lbs of Cheese Whiz.
The cameos are well-intentioned and appreciated for what they are.
It coulda be a sweet retro trip down nostalgia lane, or a super-cool reboot, but alas, it's just a gooey, slimy green retread, as substantive as Stay Puff himself.