The advance wheel has always been way behind in terms of items. Half the items are worthless for the older servers. I mean honestly..candle butt? That's a level 30~ item. The items on the wheel now (Fire dust, raging rhino, MND) are all outdated. There's still no blood phoenix, there's still only one chaos hero on the wheel, and like someone else mentioned there are still rose seeds...that event ended how long ago? Only reason I'm spinning is because there are Advance wheel cards from promotions (which are getting worse and worse).
I don't think the developers of CoG (including those at Aeria) realize that the wheel costs 5 USD each spin. Let me put that in perspective for you: minimum wage pays $8.00-9.00 an hour. A person will spend $5 for a PoS item (you can google the acronym if you don't know what it means). On Diablo III I can buy a top end piece of gear for that amount (at the very least). Here you are 80% likely to get a BoA (which 1 out 50 give a red hero if you're lucky), resource cards, silver cards, random diagrams you can get from dungeons every day, and some gear you needed maybe when there was still S1 and S2 only. Of the remaining 20%, you are likely to get a medal or some under level 100 red item.
Aeria seems to be reaping in the benefits without adding anything to the patches they are given. Tip: make the game revolve around your population of players, not what the other game companies are doing for it...Instead of massive merges...make people want to play more not drive more away.