I just noticed an improved silo on the test server which looks 3 times faster than the normal ones, great, only problem is I've got 97 normal silo's which cost over 72k gems, clearly I'm not about to remove those after they cost that much so how about some kind of trade in for normal items for the improved versions? This could work on any building thats been upgraded and stop people like me feeling ripped off, even if they only offered 2/3 of the gems back it would be something, other than that they are useless to me.