I certainly think an investigation is warranted. FD failures have been polled on the BMW forums abd have trended at around 5% of forum members. On percentage, not a huge number, but in real nembers suggestive of a problem.
However, how many were DIY maintenance jobs....bike was so filthy you could not notice a weaping seal...,etc. No question, some of the FD failures were as a result of these conditions or others.
Now, I'm on BMW # 3...no FD issues, and none to my friends high mileage 05 LT or GS, so go figure...it does not happen to every roundel adorn bike as some will imply. Moreover, as I research the C14, what do I see?...FD failures in small percentages.
Short of scrapping the FD all together, BMW did make changes to address the FD over the years, and FD failures have been reduced progresively.
My take on the FD is that yes, clearly the unit had some issues that should not happen even after you filter the data. To say BMW has not done enough, may be a fair statement, to say they have done nothing is not. To suggest FD failures are a given if you own a BMW is also a load of BS, but some seem to delight in the theory.
Check your seal often, let the BMW shop do the maintenance, keep a warranty on the bike, and ride the silly thing and don't let it bother you is my suggestion. Funny how we never mention the majority of happy owners who have not blown up an FD. A little perspective....just saying.