Just copying some comments I’d made on this in case it’s handy to people in figuring out what’s going on with trinkets. Trying to remember to do this more where the info might be generally handy and the post is clear without context.
I liked the Mists model that generally had a primary stat and a secondary stat on each trinket, in equal amounts, with either one or the other replaced by a proc. Made it easy to conceptualize and evaluate trinkets at a glance. So for example, at equal ilvl, you might have:
X pimary + X secondary (passive)
X primary + [proc for 6x secondary lasting 20s, 115s ICD]
X primary + [Use: for 5x secondary lasting 10s, 60s CD]
X secondary + [proc for 6x primary lasting 10s, 0.92 RPPM]
X primary + [unique proc tuned to equal X secondary]
[unique passive tuned to equal X secondary] + [proc for 6x primary lasting 10s, 0.92 RPPM]
And so on (the above actually decribes most Mists trinkets). Technically yes, it’s all consistent with itemization where Int is valued at 2x a secondary. But you’re not even getting to the point of having to worry about that; you just stick with a basic framework where a trinket has two “halves”.
Warlords started very similar to that, with two caveats:
1) Spirit and Bonus Armor take up the “primary” half where they appear. I’m just going to flag that and leave it alone for now.
2) Some trinkets were off at release, with a proc that was too high or too low, and they’ve been adjusted by changing the passive rather than the proc, leading to some confusion.