I’m not suggesting Shatner has “star power” in the sense that someone like Tom Cruise has “star power”...That said, when it was erroneously reported that Shatner would be returning for Orci’s version of Stat Trek 3, the film actually got quite a bit of positive press for a short time...I don’t think the writers making Sulu a gay character can really be compared to Shatner’s potential return as Kirk...Shatner/Kirk are iconic and would bring in a lot of positive press that the series could use...Bringing back the original cast did nothing but help Star Wars.
And actually, the original films of the “70-90’s” actually did quite well at the box office when adjusted for inflation. Contrary to popular belief the original ST films were big hits (TFF being the exception due largely to the poor quality of the film)...Compare the original ST films box office to the 007 films of the same era and for the most part ST comes out on top.
1/ TMP = $283,480,300
2/ TWOK = $232,175,900
3/ TSFS = $196,687, 400
4/ TVH = $249,725,200
5/ TFF = $113,757,400
6/ TUC = $154,798,200