I play as a RDM in FFXI & as a druid in WOW beta. Really hard in a way to compare, simply because the gameplay is completely different. Druid are mutch more complete than RDM in FFXI, solo druid do marvel, healer, caster, warior (Bear form) & rogue (with stealt cat form) so "Jack of all Trade" really apply to this class. In a party, sure as RDM you will be ask to play a healing role, because we are, as in FFXI, the second best class healer. But party in WOW don't need absolutly to be a 5 or 6 member as FFXI was more oriented. I played my lv 5 up to 23 by sticking around with another druid. XP was great, myself, i beat off most mob 2-3 lv higher than me & with my partner up to 5-6 lv higher than us, no downtime (2 druid, hehe) & fierce fight any way you want (melee, offence cast damage or DOT, buff). Me & my partner, did some healing but mostly change both in a form or 1 caster, one bear form, mostly bashing the mob to smack him down in no time. In PvP, from what i know druid are fierce opposition, healer mode, to keep your force in good shape or as i did more than once, entrangling root & major offence spell cast & cat form to finish the job, usually i was on top of any one on one fight. Keep in mind that equipment play a vital role on your cat/bear form (attack power & armor) so if you keep most of it up to date, melee is a piece of cake compare to melee with a RDM in FFXI. As for polearms i know that our class can use such but i never saw one in the whole beta test i did.
In WOW you're the one who decide the way you will play your druid...
See you soon on Retail...
Nightblades Night Elf lv 23 druid WOW beta
Nightblades Elf lv 38 RDM, 42 DRK, 16 WAR, 16 BLK, 12 WHT
Mogly Taru lv 32 WHT, 20 BLK, 20 RDM