So mod tools will require a lot of work by marox to do, who's the lead and only game programmer. Dominator is another coder but he handles backend/server stuff. What this means is that he would have to focus on the SDK and we would see a drop in other gameplay-related features that require coding. This is fine, but we need more base content that can keep the game afloat while the SDK is worked on. It makes much more sense to get more content in the game that is sustainable in the short term, and then knock the SDK out. The other way would mean no content and then an SDK, so for example if we'd been working primarily on the SDK we wouldn't have gotten a lot of the improvements recently, invasion, ranked, etc. and we'd be stuck in a major content drought until the SDK was wrapped up.
FWIW, I can't recall any info on Epic supporting our SDK, but I may be off the mark here.