No offense, but reading the latest posts makes it almost sound like I missed the announcement for the release date of Season One of DS9.
According to The Making of DS9
they used early SD resolution CGI Tools to paint over production flaws on the sets. If an "We can fix it in post production" attitude was rather the rule than the exception the remastering work could get more extensive (= expensive) than on TNG.
And one of the things that are impossible to fix are scenes that were out of focus. In SD resolution they could get away with this but in HD such flaws will show.
I think CBS-D will first need to check and estimate how to fix those early production hickups before even worrying what do with the CGI VFX of - Seasons Six and Seven (!)