One of the big problems is that ambitious updates have a tendency to cause unintended glitches and etc. Bungie has basically gone full retard with an incredibly inordinate number of updates that have caused so many untended problem that they've basically lost control if the coding integrity. They'd probably have better luck fixing it by scrapping everything and starting over from the day 1 meta. As it is now it's pretty obvious that they've gotten themselves in a pickle that they don't have the necessary employee talent to get out of.