I love the Shatnerverse, but I have yet to read Captain’s Blood or Glory. I’m looking forward to the Titan crossover, should I ever find them.
It's a shame the cool concepts (Borg Hypercube, the Preservers, Project Sign) never turn up again.
I can see why some people dislike it (usually the sort who take Star Trek too seriously, imo), but I personally love the Star Trek V/Stargate-style silliness and the fact that Kirk saves the day every single time.
I think the Back to the Future-style flying cars in Collision Course were a bit much, though.