But if the Ghostbusters kill Satan and hell, then what???? Would we all get along and sing folk songs 'round the camp fire?

I think the proton packs should stay the same, but still change, if thats possible. I don't mean like they did for EGB I mean smooth out the pack, mabey make it a chrome metal tone, thats smooth and flowing. Have all the stuff in the same spot, the lights in the cyclotron and the EDA cell Etc. all in the same place, just more scientifically futuristic if they change at all.

I agree with Ghostbuster505, depending on how much time has passed and whether or not they've been busting during that time. If it's been a while (like they did before, present day) and they've been active, I could see updating the packs a little. Keep the same general look but update the feel a little (slightly smaller, more streamlined, etc.) I've never really seen EGB so I can't comment as far as that goes.

Maybe an equipment upgrade would be in order due to the fact they've either been shut down for so long or its just outdated. Either way I still like the old equipment myself.