I am a steady contributer since 2008 and i have not been asked if i think a new license is a good thing or if i would like to have a shared alike license. The first time i have been asked is now to acknowledge the license which up to now i didnt and i probably wont.
I dont belive in strict licenses and any restriction or even complexity in the license makes the dataset more complicated to work with or might even make the dataset irrelevant. I even more dont believe in somebody stepping up and sueing all the abuse with the data.
I have more than once written to talk and talk-de that i'd prefer to put the dataset out in the public domain or the equivalent in those jurisdications where this is not possible. Make it PD and put a Social Contract on it like the Debian people did.
Or for simplicitys sake: Acknowledge that CC-BY-SA is defect by design for our use and take the CC-BY-SA as a moral or social contact and be done.