What I have seen until now, the pollution restrictions in Switzerland are the points to carefully look into and it may cost big bucks to get it in order. Add to it some upgrades to the lights and other minor steps.
But I am still enquiring to make sure I don't have (or reduce) last minutes surprises.
Anyhow, I am plannind to bring it back as moving items, which allows me to skip most of the restrictions. But to act like that, I will have to move to the states for at least 6 months and have the van registered under my name... hard life, need to kill 6 months by travelling thru the states!!!