Electronics is definitely my forté much more than mechanicals. The electronics in the 8 aren't really too bad -- a lot of people say they're problematic, but that's often because they don't understand them.
The 8 was the first BMW to use bus communications between all the electronic modules, and in places like the electric window switches (if you've ever removed the driver's window control you'll notice it only has 4 wires even though it's controlling 4 windows with one-touch). But the bus is no less reliable than old-style wiring; possibly it's more reliable as there are fewer wires and connections to go wrong.
The main thing is to be aware that there are a lot of control units scattered around the car, so if any of them get wet for example you can get strange problems. Damaged wiring can also occur in several known places, such as in the left wheel arch area on earlier models (possible ABS issues) or the wiring to the boot lid cracking (common on several BMWs of this era).
A diag machine is a definite plus with these cars. Personally I prefer the proper BMW tools such as MODIC, as they're reliable and give good troubleshooting information when a fault is detected. You can also perform tests and get live data from some modules.
But MODIC is expensive so not for everyone; Carsoft or similar provides a cheap alternative that will do 80% of what most people want, for 10% of the price of MODIC. OK you can't do things like reset the initialization lock on the IR mirror using Carsoft (I did actually have to do this after losing my key and discovering my spare had a flat battery) but few people even know such things exist, let alone how to use them
If you guys have electronics issues and need a diag any time, drop me a line and we should be able to sort something out.
As for the meet, I'd quite like to go but my 8 is currently waiting on me fixing one of the headlight adjusters after I broke it trying to adjust the beam. They're cheap nasty plastic that are very prone to breaking, but I thought I'd try anyway. I have the replacements waiting, just need to find the time to strip the headlight unit.
The other issue is that it's on the 1st Feb, and I have a night out to watch a few of my mates who play in a band on the 31st Jan. But I'll see what I can do