Wait what, there's a Bard class in TERA?
Anyway, I also don't have a problem with Archer potentially being a support/DD hybrid, but I could see why some who chose archer for pure DD might be annoyed, which is why I actually have nightmares about the way they're implementing jobs 1:1, instead of a more FFT style system.... But, well, too late to worry about it now!
That being said, I am sure the class will not resemble Bard as we know it from FFXI too closely, (if it is in fact Bard) seeing as you'll still be shooting arrow,s you'll definitely be doing more damage than Bard ever did. And besides, we all know you're not allowed to have an aoe with a range of more than '3 in this game, so that you have to cast buffs over and over if your party is moving around. Get ready for single target buff-a-thon! (god I hope not)
If anything, it would be super to see songs with a mixture of enhancements, so as not to require ridiculous positioning, unless they finally add an AoE indicator, why isn't there one?
Oops, not Tera, I meant Rift, sorry! Sometimes all these MMOs start to run together, especially in a post-WoW world, where it's getting harder and harder to tell a new game from a WoW patch announcement. XD
Moving back to FFXIV, though, I think that our famous harp-bow will come into play in a very good way - SE was smart to make Archer go into Bard, because if Bard needs to worry about positioning and running after various players, then having the ability to attack from a distance greatly improves their ability to multi-task. Most likely, an Archer will have to simply "tone down" (see what I did there?) their damage rather than eliminate it altogether. If Bard came from, say, Marauder (which is obviously doesn't, but this is for the sake of example), then you would have to completely abandon any hope of actually attacking the enemy when in "Bard-mode."