It gets old seeing threads like this where some people's replies are merely just "roll a tank/healer". Come on now. Do you really think we need more ungeared tanks on server? mained healers yes we do need badly but if everyone's running around boxing tank/healers what would be the point of the other what? 11 classes in game. As someone's who's tried less conventional combo up to lvl 55 (bard and mage) I can tell you that the combo actually starts off weak but gains power as time goes on. And in the right areas I had NO trouble snare kiting. Anyone paying any decent amount of attention should be able to snare kite without picking up adds unless you're just blind or something.
As bard mage i snared kited well into my 50's, basically bard would snare kite the mob down to 80% health or so, then mage would sick pet with /pet taunt off. At about 70% i'd start casually nuking on my mage and normally the mobs would drop before mage pet would steal aggro. By that point mage would play pet healer while bard melee dps's until mob dead. Trust me, it works. And if done properly is actually very efficient and can be done nonstop without ever needing downtime.
All in all, I would suggest to give the combo some time if you're really serious about it. The combo may seem weak but once you can get 60+ buffs on your toons its ez exp from there. Or like it was suggested you could just be lazy and roll a tank/healer combo like 80% of the server does...