I follow the attached, published BMW Maintenance Schedule.
It is very comprehensive AND if you keep receipts and records you will have no issues with verifying your work on the bike should any warranty claims or issues materialize.
I do try to check the FD a bit more often, say at 3K, but if you do find misc. steel bits in there it probably means you've just been lucky!
As to the other items of concern on your original list, they are generally rather long-life parts. One of the main problem areas other than the FD is the Slave Cylinder, Dave Shealey, IIRC, sez if you get it to 65,000 miles CHANGE IT!
Again, the idea you've been lucky.
I just did my first valve adjustment at 36,000. They were okay at 30K and now ALL intakes were out. After the job the bike ran better and my mileage increased?? I suspect many miss the valve deal.
Working on your own scoot really gives you insight as how it is running and takes away much of the mystery under the plastic. Should a real issue arise, you will probably be in a more informed state than many who have all their work dealer performed.
Most of us have found the LT to be robust and able to take us far and wide with NO problems. But, alas, a small percentage have had nightmares. It seems that the real problem bikes have more than one issue.
My bike has had zero issues. Knock, knock, knock...
One last thing, I don't think I would own this bike if it weren't for this forum. It makes ownership a joy not a dealer induced headache. (Thanks everyone!)
Good luck and Happy Riding!