I think Gardiner has a real solid season. I'll go with around 35-40 points, improved defensive game, nice chemistry with Polak (who I think he'll mostly play with), and sold progress towards becoming a good #3 dman (at the moment I'd consider him more of an OK #4, but his potential is much higher).
Kid has a lot of talent, only just turned 24 (still very young for a dman), and has only played the equivalent of 2 full NHL seasons (167 NHL games). I don't know that I'd want to play him on the top pairing with Dion now, save that spot for Robidas (if he's healthy and playing well), but I do see him being a good 2nd pairing guy for us this year.