Gents, I've read your responses and will take some time to chew on them. I hadn't thought of Reserve pay in terms of increased work, and I hadn't thought of Avg Daily Value as reducing my days of work (as opposed to increasing my pay), among other oversights. Thank you.
Regarding narrow-bore scope, I see this TA as an overall improvement. Fewer DCI seats seems like a good thing to me.
Regarding sick pay, I have three young kids and lead an active lifestyle. I get sick. I get injured. That bump in sick pay matters. Will I use all 125 hours in a given year? Probably not, but this faced me with a choice: choose some arbitrary number lower than 125, or go whole hog. I went whole hog.
Again, thanks so much for your considered (and considerate) responses. I look forward to continued analysis of this TA from all sides as we work to arrive at a wise decision.