I said it before and I'll say it yet again:

Running Coil unsynced is easy because we learned what to do.

I get that you want to run it synced and it's hard to find people that also want to, but that still doesn't mean running it unsynced should remove any and all challenge from it. Furthermore, you have the benefit of there being MANY guides out there. Read them, watch them, LEARN THE MECHANICS, and you'll see just how easy Coil now is. High HP, high gear, and higher damage than what was originally capable is all that running it unsynced will give you. You have to do the rest yourself still.