Suggestion: Marketplace Improvements
I have read somewhere something about this and i think it is a good idea to add more usefull things at marketplace to buy.
Examples:
Liitle energy refills (30 - 50 - 100 points)
XP Breef
Rare - Epic books
XP Boost x1 Day (or little ones, by hours)
Forge mats
Keep´s potions
I´m sure Im forgeting some other usefull stuff. Of course, these things must be limited by month, with some "random" probability and high (but not insane) silver prices.
Otherwise, marketplace is just used to get shards for events (or for getting some character at really early game). Once u have some time playing... its get complete useless.