For me the two most wrongly done jobs are summoner and bard. Summoner, as many said before, is not really a summoner here, it's a dotter with a minion. Yes it can be a strong dps and w/e you like, but still not a poper summoner. Its damage should be based on its summons, not on dots.
A bard's strong thing are the songs, and here you get penalized when singing, first your damage gets cut down with either mp or tp song, and your mp get sucked dry. So what makes me want to sing? Also as someone commented before, an archer stays away from the monsters, but a bard has to stay in range of the party or the foe, or songs won't hit. And don't get me started with the healing LB...

Also, since we're here, are we really getting a second job for each class or was arcanist just the exception?