It's a small secret dream of mine that they'll announce a new quartet of characters and I'd definitely be happy to have Tremor as one of those. They did great things with Skarlet, I'm sure they could make Tremor worthwhile.
Throw in Tanya, Fujin and Frost (if she's who people want) and I'd be happy to hand over some more of my cash to NRS. Although I haven't played a MK prior to this one since Ultimate MK3, so my interest in these is just purely aesthetics (they look cool), I have no clue about how they actually played.