What I have found (Destiny)

by cheapLEY , Monday, September 18, 2017, 16:47 (2703 days ago) @ TheeChaos

Seems like its completely random as to which appear. I thought it may display the mods you have the most blues of first, but thats not the case. I did find that if I bought some of the mods it would bring new ones in as I ran out of blues to use. Not that big of a deal, as I should just start making as many purples as I can instead of hording useless blues.

I thought it was just that if you had three blues of the same type, you could turn it into a purple. I didn't see or realize that Banshee's inventory changed for any reason other than blue mod availability in my inventory.