Everybody has their hot button issues. Some are real, some are perceived, some are based on expectations. In addition to a 2015 MKC, I have a 2013 MKZh. I was just reading in the MKZ forum about the 2017 MKZ changes - and several people chimed in that there was finally going to be a real armrest (console). I've had my MKZh for 3 years and never noticed there was no real console armrest.
One of my hot button MKC issues was the placement of the stop/start and I complained long and hard to Lincoln - salesman, sales manager, dealership owner, concierge, etc. My issue was not about accidentally hitting it, my issue was that it was opposite to the MKZh. The MKZh had the Stop/Start at the top and Drive toward the bottom. Because I had the MKZ first for a couple years, I was constantly turning the MKC off thinking I was putting it into drive. They fixed it for free, but I would have paid to have it done. To me, a real problem is one that you would pay to have fixed.
Other than that, I too have just had oil changes and had them do the safety recall notices. I did have them fix the Sirius radio drop out even though it really did not affect me much. I would not have paid to have the fix since I had minimal dropouts - but since it was free, I had it done.
For folks who complain about Sync, I had an Acura before my MKC. Sync runs circles around AcuraLink - and the Acura was infinitely more expensive than my Lincoln! It is perception and expectations.
I read the forums, only really writing something if I have a complaint. I do occasionally try to answer folks questions - although most of the time it is just copying out something from the owners manual. I refrain from adding.... read the manual, stupid!
I would not have bought the MKC if I had not been so happy with my MKZh - and Lincoln in general. My two Lincolns are the first time I have ever had two cars of the same brand. And I will probably trade in the MKZ fir the new 2017 if it looks as good in person as it does in the pictures.