So you have 450 rep items for the Iron Garrison Guard that you want to convert to the Iron Garrison Miners and that takes about 5 minutes to do, then another 5 of clicking to get the rep, then another 5 to straighten out your crooked finger from clicking the barter/enter button 900 times. Wouldn't it make a lot more sense to allow a stack or Alt amount the same way you can when buying items from an NPC?

Same thing at the task boards. You've made it so that you don't have to go back and forth, but still have to stand at the board and wash / repeat when you're turning in 50-100 of the same item - busy work (and tedious).

Finally (and the most annoying) is combining relics. I had about 1500, but each time I start clicking get the "too many request" BS, which could easily be solved if I could combine more than 5 at time.

It is done when buying things, why not when turning them in?