What we've seen of TNG in hi def has so far been nothing short of phenomenal, and while the later seasons tended more toward a flatter, brighter look, DS9 maintained a high contrast, very diverse and very detailed look all through its seven years.
Sign me up for DS9 in hi def. All seven seasons, full recreations of the CGI and an amazing look at the model work. I would be open to more experimentation and variety of shots for the large battle scenes as well. Never what drew me to the show in the first place, but if they're starting from scratch I have no problem with them making the CG effects as engaging as they'd like.