If engrams went straight to the cryptarch via ghost. If ghost sees a engram he flys over and eats it (scans it you know what I mean) it would then be waiting for you in the cryptarch's pocket. When you approach master Rahool or master Ives they ask you would you like me to decrypt these now or later (that would be awesome if the cryptarch got a whole new sentence to say). If your slots are full you cannot decrypt the engrams. This would save time and give us extra lost space for players who infrequently use the tower, we kind of need all the vault space and weapon/armour slots we can get with more legendary and exotic gear coming out that will then mean my Titan hunter and warlock will have another 2 slots in each armour slot taken up meaning less space. I hope this post is heard I think it's a great idea.