My take so far
* Subclipse — needed until subversion support is added
* TPTP — performance tuning is a key part of development
* Fatjar — this helped quite a few of our Matisse4MyEclipse developers deploy their apps, very handy
* PMD/Checkstyle (not sure which) — team-based metrics are important
Cool but not necessary:
* JAD support, not everyone uses it
* WOJ, great plugin but not free
Note, these are not the views from management, just my 2cent observation from being on this side of the fence.