I did lots of things whilst the car was off the road over the last 4 days I've been meaning to do for 5-6 years...
As mine is a 4Motion TDI, and taking the front of isn't hard or takes that long, plus I was fitting a larger intercooler, I opted to remove the engine for this work.
New turbo
New Sachs clutch kit (inc DMF and CSC)
New genuine VAG timing belt kit + Meyle HD water pump (last done when I got the car in 2015, but I changed idler and tensioner studs this time)
New gearbox end crank seal (Febi)
Front H&R anti roll bar
S3 type intercooler and hard pipe kit.
Glad to have it all on the car. Still alloy wishbones/hubs, rear ARB and new top mounts to fit, but I ran out of time after a few issues... The CSC was bent during shipping and wouldn't fit into the gearbox (discovered on the day) and it snapped trying to straighten it, so I had to source a new one. Also turbo feed pipe wasn't coming undone from the union that screws into the turbo, the whole things was turning, so glad I took the engine out as sorting that, in situ would have been nigh on impossible.
As a note, the 8 year old timing belt was in great condition, I genuinely think it would have done another 8 year/70K. The water pump was OK too but I think that would have probably caused issues before the belt.
Stu