I can't imagine that Blalock would be available to reprise this role in a motion picture. Her post-Enterprise
career is easily as demanding and full as the post-TOS careers of James Doohan, Nichelle Nicholls, Georget Takei, Walter Koenig or DeForest Kelley.
Whaaat? But Koenig was on B5...
and New Voyages: Phase II... oh wait.. I see your point.