Ben Goodger has decided to put away all these silly suggestions with his list of why Firefox 2.0 is still going to be called that. There are a couple items I think will be well worth it.
P1: Spell check for web text areas.
P2: Spell check option for text fields.
P3: Updated system integration for MacOS X, GNOME
The fact that the priority of these items enumerates is purely coincidental. I think the third speaks for itself. The first two however are why I’ve stuck with Safari for so long (as well as better plugin support and great bookmark syncing, but I digress). When I’m forced to use Windows, Firefox is a great companion, but leaves me in the cold with my sometimes lacking spelling skill.