1. Highlighter (quickly adds/removes arbitrary regex text highlights. The highlights are persistant through different syntax schemes and stored in editor preferences)

2. JDiff (powerful side-by-side meld\xdiff-like embeded visual code diff)
3. Hypersearch (compiles a list of all found entries (links) in a compact side-window with a short code references)

PS. this is not a feature request as I think there is still a lot of effort needs to be put into improving and polishing current sublime functionality... just a short note.
Cheers,
N