You don't need a rebuild, it is more of a drop the lowers drain and refill oil and regrease seals and slap it back together. The oil in the damper etc. isn't going to need to be replaced that quickly. So, you are talking a 15 minute job every few days in the park. My Totem was exactly the same.
When I ride with an xc helmet opposed to a full-face, I find that still ride all the same stuff, but at a noticeably slower speed. Since I ride mostly dh/fr, 90% of the time I wear a full face.
However, if you ride a bike with less than 7" of travel, you look like novice if you wear a full face
The current TDI is a totally different beast than previous iterations. Very quiet, no smell, no smoke, and gobs of power (140hp, previous was 95 I believe?)
I have a 2012 Golf TDI and love it. Very torquey. A friend with a 2012 GTI is jealous of my car's power during city driving. Mileage isn't amazing but it's good (about 6.0 L/100 on average, 75% highway 25% city)
Mk3 and Mk4 had 90hp. They were relatively gutless, but smell wasn't too bad and no smoke either (if everything was kept in good working order). Fuel efficiency was much better for the older TDI's as well (less power, more fuel economy).