Nice!
I have done some upgrades from Mulfab (Steering and Suspension), Librands (Exhausts), Wolf (Bonnet Stays), MK Holztechnik (Part to dashboard), Defa (alarm) and MorganPark (Holzlenkräder,++).
In addition (recommended), I have included a Quaife ATB Limited Slip Differential, and winter tires with spikes. (++ some home made stuff).
After a 7000 km summer trip to the French Alps this year I am ready for new improvements!
I could imagine, for example, rear shock absorbers that can be adjusted in height. We need that when we are heavily loaded for longer trips! And maybe something about the brakes. Need a little more brake-power at high speeds on German highways (highways are not fun, but sometimes there are some road transport stages).