Well, I guess we shouldn´t forget, that Ashley and Tom are business men by all means. They need to make a living from it and so there are some decisions, that are honestly absolutely right from a sale point of view.
Every now and then you need to bring something entirely new or you´ll get fuc**** by the market. Imagine Apple would improve their iPhones all the time, instead of bringing out a new version every now and then. Nobody would buy an iphone 3SSS.
Throwing out a new software will definitely give them a flood of sales by us, the current userbase, as well as a hype for new ones, cause of the exitement a new engine release will cause.
Never forget that it´s not always about the current users and a community near working....sometimes it´s about marketing and money.
PS: This shouldn´t sound like Ash and Tom being cruel business vamps^^ It´s just that there is so much more in leading a company than just the product!