This isn't a good idea.
And I'm pretty sure SE noted they are adding an icon to know when a player is seeking for repairs.
I wouldn't be sure that SE noted or thought anything given the current state the game's in. What i am sure of though is that SE wanted us in the Market Wards buying and selling. The prices for NPC repairs seem to indicate they want us to utilize the DoH group... and as all the buying and selling is done in the Wards (or supposed to be) it would make sense to have a common, centralized point to drop your retainer off and come back to a full set of repaired items.
I sometimes on the fly will drop by the Guild location for any particular piece i need repaired... but i'm only going to shout once, maybe twice - wait a few minutes and then move on. i've got beasties to kill! :)