I'm thinking between something else or surprise me out of the five because i'm not a fan of the free spins and i'd assume there aren't many high-rollers who'll vote for the deposit bonus.
Such offers are temporary and if you want to give a good offer them get something exclusive for the community. Otherwise do not bother as there are a big bunch that respect the community. They exsist because the offered something unique for the community.
Maybe they don't have that much budget compared to other sites that's why they couldn't offer something exclusive and that's fine. The Calendar is good enough if they can find some of the best promos that aren't getting enough exposure.