I’m sorry if this question has been asked before, but I was not able to find it.

Currently I am the MT for a rather new guild that has downed vael to chromaggus in 1 month. When I do get my wrath gloves, I am not sure what enchant (Threat, 15 agi, etc) would be best for the guilds progression and my ability to tank. Keeping agro right now is not much of an issue but our DPS is not geared and in the future i am not sure how much threat I will cause compared to their DPS. Any feedback is always appreciated.

What faction? I find there is a case to be made for +threat if you're Horde, but overall +15 agility would probably work out better for a Main Tank. I'm a Fury spec dualwielder now and I put +threat on my Wrath gauntlets for when I have to OT stuff because I regard it as a mini-defiance and hey, every little bit helps right?

Agility provides better mitigation overall, from your story (and your name suggests Dwarf warrior, sorry if I'm wrong ;)) regarding your current aggro situation I'd advise you to take the 15 Agi enchant.

I am indeed a dwarf lol.

For a new guild I'd highly recommend +15 agil. The mitigation and armor with help your progression, and its unlikely your DPS is so geared that they can tear aggro off a competent tank.