So, buy now and regret or wait eight months and get all DLC, four new characters, story mode, and backrub for $20 less?
The core mechanics of the game take time to learn and Ryu (great starting character) is already out. A friend of mine REFUSED to play SF4 because "SF5 will be much less bull**** and fair", never learned fundamentals, footsies, neutral, or anti air and now I think he regret his decision.
This really depends on whether you've played a fighting game seriously before..
Because it's mostly the same stuff.. hit this button here, wait, confirm, forward, back, confirm, engage
Slight variations here and there..
So, it's not imperative that you start NOW, assuming you've played fighting games in the past..
You could just wait until the Early adopters work out the core stuff, and then go from there, saves you alot of personal practice time, because it's mostly a grind in the beginning.
In fact, I'd say , you'd only get a NEW fighting game if you really enjoy grinding to find combo permutations.. Which I personally don't..