Ok first of all this game is awesome, the best Arpg on the iphone as of yet in my opinion, I have a few suggestions that would make this game even better though!
•As was stated before me, the prices for the heroes are a little high. 400 gems for the warlock is around 15$ which is ridiculous.
•The prices for the featured items are a little high also, most of them are 100+ gems which is around 7$-10$, for 1 item it is ridiculous also.
PS: for these two points, either reduce the prices on items/heroes or reduce the price on the gems themselves, i would buy some but not at those prices as im sure alot of people would.
•As was stated before me also, the waiting time for training is too high, im not at lvl 15 yet but 4 hours is way too long, training should be capped at 1-2 hours in my opinion, if you want people playing instead if waiting on training.
•*A function to unequip items would be very nice, say I equip an item which i bought with gems and then decide to buy a hero, that item which i paid for is stuck on a hero that I will not use anymore and if I equip an item by accident it is stuck there, this can become very annoying.
That is all I can think about for now.
Great game Devs, keep up the good work and bring out some patches!!!