So a while ago I posted this thread which was asking what if Leonard Nimoy didn't return for Star Trek III and wondering what everyone's ideas were. This is just a similar one wondering, if for Star Trek IV they never came up with the whale (and whale probe) plotline, what do you think would have been another good follow up to the actual released Star Trek III. The crew are renegades from Starfleet on Vulcan with the Bird of Prey. The Enterprise has been destroyed. David is dead. Again, kinda a bit of both "what you think would happen?" and "what you would like to have happened?"