Yet again an update that is ill conceived and Poorly thought out. There are some discrepancies, such as; Dragon Stone Bonuses. We can use Dragon Hammers to reduce Building Construction time, yet we Can't use Dragon Hide etc to reduce Troop training time. Either Dragon Stone applies to Stoneheart or it doesn't, make your mind up.
The cost for an upgraded Craftsman is Extotionate, 15k Sapphires is Rediculous, total rip off.
We need more accessibility to Soul Stones. Adamantine is available in the Black Market at a reasonable cost, so why not Soul Stones. This would also help beginners starting out in the game. Soul Stones are far too few in the game. When they do appear, which is infrequently, there are too few of them.
This is an update for the wealthy players and is a total turn off for the regular players.
There are outstanding issues you should have resolved, before you launched yet another Money spinner. What about the outstanding issue of the Dragon Stone and what to do with Mana, when you have completed all the Dragon Stone levels. Killing Monsters in Dragon Stone is now Pointless, once one has completed all the Dragon Stone levels.
Sort out your outstanding issues, before launching more money grabbing ideas.
More thought needs to go into updates like these. Your developers need to heed the feedback on here, Most of which is Negative, although I very doubt that they actually care.