[HaroldTheBarrel]

That's not really the full picture.

One of the lead Firefox extension API devs is also the primary Pentadactyl (and former Vimperator) dev. I'm sure they were aware of exactly what was needed for that and similar extensions. They also made it clear from their earliest announcements that they intended supporting these extensions.

It simply isn't a priority which may be fair enough.

Pentadactyl still works well on ESR.

[CorpusCalcium]

But the full picture also includes the fact that if all people were willing to do was wait for someone else to do the work, then they really have no high ground to complain that it didn't get done in the time-frame they wanted.

Other addon devs did help push things along, and they got the abilities they needed much sooner. We can only excuse ourselves so far before we share in the responsibility for things not getting done.