If you think you'd make a better candidate why don't you run against him for the NDP nomination. In fact why doesn't the so-called Socialist Caucus take this opportunity to run one of their luminaries for the nomination and lets see how many votes they can get in a riding that ought to be a hotbed of radical socialist sentiment in the NDP - or is it?
and BTW an endorsement from a well-known Liberal is NOT so useless. A helluva lot of people in Trinity-Spadina are Liberal/NDP swing voters and in fact when Olivia Chow won by 20,000 votes in 2011 it was largely with support from a lot of people who consider themselves to be Liberals who voted NDP for Olivia Chow. If Joe Cressy wins the NDP nomination - it can only help him in the general election if swing voters and "soft Liberals" see that he is backed by "opinion leaders" in the Liberal world. What's not to like?