DS9 is very much an ensemble show...but the amazing thing is that even the recurring/guest characters in some cases get more background than any TNG regular (excepting Picard, Worf, and Data) ever got. I think you would love it. It's an investment in time because DS9 is more serial than TNG (where episodes can be watched as standalones), but it's outstanding.
I agree that Spock was a very well-written character. I realize they aren't canon, but I actually like the TOS novels much better than I did the show--I can revise the effects in my head, they tend to be less misogynistic than the show was, and the level of detail is excellent. (If you ever want recommendations, or to discuss books you've read, I'm up for it.)
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Official diagnosis: ADHD, synesthesia. Aspie quiz result (unofficial test): Like Frodo--I'm a halfling?
110/200 NT, 109/200 Aspie.