Turkey is not alone concerned by the actual Syrian crisis, the whole world (especially Russia with recent weapons sent to assad, China, US and the NATO, and not to forget the Middle East in is totality including Israel) So Turkey even if it look like they have good reason to bomb Syria, wont do it without concertation with allies. This can take a few time but it will end bad for assad, that's the only thing we are sure.
A unilateral answer from turkey would bring more oil on the fire of middle-east crisis.
US Secretary of State Hillary Clinton condemned Syria on Sunday for the "brazen and unacceptable" shooting down of a Turkish fighter jet and vowed to work with Ankara on a suitable response.
http://www.google.com/hostednews/afp...42f856beaa.271
I'd imagine the average Turkish person on the street wants retaliation. Erdogan seems to be doing everything to prevent that from happening.