Pretty good when comes to solving problems regarding Propercy Pool. However, mind that there's incoming Raid Shop (Obtaining Raid Coins by attacking Raid which is used to purchase Equipments in any stage you prefer)
Pool Coins,eh...??? Good idea, but players who already passed highest stage will going OP because of this.
Firehawk was already into Guild Shop...
Havok... no idea...
Twins and Aqua...??? I bet things are getting messed up.
If Crusible Supply Wagon has 2 tabs (One for equipments and junks, another for Soulstones), that will solve soulstone problems...(Mind that level 100 players always getting Crusible Coins for every dailies cleared)
The original post has 6 months, so some of these heroes have been released.
Anyway, I hope in the Raid Shop, it may be very useful is fast and clean as guild shop.
About "Pool Coins", maybe something like CoF's, or just another tab to buy something with gold.