(2) Drawing attention to the Cynic tradition was principally the work of Hengel and Theissen who noted its analogy to elements of the Jesus tradition (not the least of which is the mission discourse in Mark 6). But they did not take in the direction of Mack, Vaage, Seeley, Crossan, Downing, Cameron, Price which is exactly why Theissen called the Jesus Seminar's Jesus the "Californian Jesus".
(3) The Q hypothesis has been related very closely to a high level of Hellenisation in Galilee as Chris himself notes. Here I commend the work of J.L. Reed who has pointed out that the Q tradition seems to know of some contact between Jesus and an urban environment, but with M.A. Chancey we have to keep in mind that Galilee was only in its infancy of hellenization in the first century.
(4) I also like the short comment of H.C. Kee: "Jesus’ wisdom does not consist of pious, timeless aphorisms on an allegedly Cynic model, as a contingent of New Testament scholars have tried to show. The true analogue between Jesus and the Stoic-Cynic tradition is rather what might be called an eschatological-ethical theme: the gods will reward and sustain the king who honors virtue, who is humane, and who is characterized by prudence (phronesis), temperance (sophrosune), justice (dikaiosune), and courage (andreia)." (H.C. Kee, The Beginnings of Christianity, 459).