Agreed.
I'm aware that there is Nato air presence there but Turkey just a year ago complained that it was not sufficient(they may have also said so more recently but I haven't read that). Putin knows Turkey is basically the ugly duckling. He suspects that Nato powers(especially European ones) will get nervous likely tighten up rules of engagement and may even recall some forces for "maintenance". The Dutch recalled mobile surface to air missile defense systems last year from Turkey when ISIS was approaching the Turkish border. Obama needs to lead on this. I think we need to do something like the Berlin Air drops. Show that we are srs and will not be bullied or deterred. Putin will back down if he sees that Nato is ready to commit real resources to defend Turkish sovereignty.
Interesting point on Turkey being the Ugly Duckling. They certainly are the most unique and outside the mold nation in NATO. A strong show of unquestionable support for them would send a strong message that Turkey is NATO and that isn't changing.
Question is what is Turkey willing to have in it's territory? Would Turkey want say 27 (one for every foreign NATO nation) foreign warplanes from 27 countries on their territory?
War games (such as a simulated dog fight) with a plane from every NATO nation on the Turkey/Syrian border would send a strong message if it was played right in the media as a message to not interfere with NATO countries.