I like that you have to choose your arsenal before you enter a gate. However, I think you should be able to freely change your armor on the fly to adapt to the situation. Let me change my helmet, armor, and shield on the fly and it gives me a better reason to collect, level, and use resistance sets. Otherwise, I predict everyone will gravitate towards "well-rounded", and we'll have 90% of players using the same 2 or 3 sets of gear.