He did. This film has a number of action sequences. The 2 raids on Paradise City, the escape up the turboshaft, the finale - which is action from Sybok's death until the BoP kills the alien - all point to Shatner's wish for more action and "real steel clanging doors" or something like that.
The turbolift moment, excessive comedic elements and deck numbering snafu aside, was pretty decent. A movie invariably needs action somewhere at some point, and a good claustrophobic chase scene can do wonders. In this film, the attempt was more psychological in scope due to brainwashing. It doesn't quite work, almost does at times, and it's a refreshing change from the usual "running away from the monster to the beat of loud music even if it's good".
The plot switch in getting the BoP to come in to destroy the being seemed pretty neat as well and should have been proper epic, and almost does. IMHO, TFF had a good story buried inside so much fluff, which leads to the next point...
It's not "Lethal Weapon" paced action, but TWOK had a couple of short space battles and one extended hunt scene. It wasn't an "action" movie either.
It's sadly not "Loaded Weapon" either, as at least LW's comedy often landed (and still more often than not holds up). TFF's attempts at comedy too often fizzle (and didn't even land at the time), but to the best of my current understanding, the need for the comedy was dictated to Shatner because of how wildly successful TVH and the use of comedy there was?
Besides, he is an actor. Actors went to act. So his film contained a variety of avenues for him and the others. But Shatner liked to be physical (mountain climbing, horseback riding, fight scene), loved to goof around (all his gags), and liked to handle meaty material ("I need my pain!").
Yeah, the Sybok scene with the big three and "I need my pain" is probably the best scene in the film and is strong character development regardless.
Star Trek V actually mimics Shatner's personality pretty well. Right down to the horses.
In the Federation, no planet seemed better suited for horses than Nimbus III. Heck, the idea of this planet and structure was actually great... but not really delved into to give the movie a greater grounding and footing. Apart from "oh, it failed, let's do a burp joke" and some deleted scenes whose wooden acting otherwise had more of what the film needed.