[2019] This "select more than one" is new to the armory, right?

Hey Captains,

We are glad you are enjoying this feature and it was noted in the patch notes: We’ve added the possibility of multiple exchange of resources for in-game items. Now, you can decide how many signals, camos, upgrades, and other non-unique positions you would like to receive. Please note that coupons apply when exchanging only one in-game item. This option became available on April 29.

This is a feature that is a great "quality of life" improvement! Please do take note of the line I have put in bold above about coupons.

What do you guys like most about this feature?

Yes, you can use this feature for signal flags, camouflages, and containers in the Armory.