Predict more minimal styles. As we saw insane colors/embellishment for 2017.
Trends seem to rotate to opposite ends of spectrum. To keep people buying, re-buying.
As economic worries continue, predict so will fringes & fun add-ons. Cheap, uplifting.
Bag charms should hang on, too.
Also predict transparent bags, for minimal/practical reasons--many workplaces require & employees want fashionable choices.
Whatever evil design god causes python skin handles & graffiti logo mania could wander away for several decades. Would not be loss, imo.
Am sure concept of "it" bag continues & will continue.
Just as I am sure about my utter lack of concern over most of them.