2. The fuse thing with the fans is common. You might need to clean up the contacts on those fuse holders. Make sure they're not burnt up.
Fans not running could have contributed to your overheating problems.
3.Breather hoses, another common problem at the age of your vehicle. Unfortunately, when you start messing with that Y-hose you'll likely find that the T-hose that connects down to the crankcase breather port is also going to be wasted. You can replace them with a silicon hose kit from Forge or 034Motorsports also have quite a complete kit for less money than the VW hoses. These hoses can contribute to misfires.
Here's what you'll need too replace the breather hoses from 034Motorsports
You can replace a bunch of that stuff with a catch can - depends how project minded you are.
1. Did you buy a full set of VW ignition coils - best to replace them all at once. There is a VW recall on these - did you get that done? Your new coils might be under warranty if you got them from VW directly.
The oil being bone dry does not sound good. Did you bust a coolant hose or an oil hose to the turbo?
Other common problem at the age of that vehicle is leaking valve cover gaskets. When you changed the coil packs hopefully there wasn't pools of oil sitting around your spark plugs.