In all honesty it's not up to ed boon or NRS. If Warner Bros. wants a new MK in 1 to 2 years then there will be a new MK. Warner Bros. pulled MK back from the brink after the fall of Midway and seem to be placing a fair amount of money on this brand. So again, if Warner Bros. says jump, NRS will have no choice to ask "How High"
After every interview i've seen where Ed and NRS has had nothing but positive things to say about WB, I highly doubt they would be sos trict. I get what you're saying though, and obviously them being the publishers they do have final say. I just doubt they would ever say "we need another MK game in 1-2 years" or anything of the sort. They'd prob. just say "We'd like another MK game, take the time you need to make it even better than the last one, here's your budget, and try and get it done in around 2 and a half years etc.".
That's why I think all this WB hatred dude to their marketing is bit unwarranted. WB practically saved MK, and they are a much better publisher for MK than Midway was in it's last days. WB is staying hands off and letting NRS do their thing, and letting them have extra time in order to get the best quality possible. They demand a higher quality product, but aren't unreasonable about time constraints and due dates etc. They actually know what they are doing, and they are going to take MK to mucher higher places than it's been since the 90's.
The even more ironic thing is, is this would likely not even be the case if MKvsDC had not had happened. That small working relationship with WB was likely the reason why they showed interest in picking up MK in the first place. Many people were against the game, but without it, we'd either be seeing no MK, or a much lesser publisher picking it up and wouldn't have such great stuff coming our way as we do now. We got lucky.
So even those that may not like the marketing and promotional strategy we have now, you have to appreciate how good of hands MK is now. WB is a juggernaut, with tons of money and successful franchises. Whereas MK was basically Midway's last money maker, it's only one of MANY for WB. That's why they aren't pushing MK out the door to release the game as soon as possible, like Midway did, which decreased the quality and made the games suffer. They don't need to rush MK to survive.