SmartThings lost geko a few months ago… He decided that ST wasn’t for him and replaced it with Staples Connect and Wink. Personally I wish him luck with his 2-3 hub solution. I know several really good developers now work for SmartThings, so yeah we may have lost some that way but I feel we have MUCH more to gain. Finally every user of SmartThings is potentially a developer and some will fall in love and write amazing devices, but nothing is forever and eventually everyone will move on to something else and someone else will be there to fill the void left behind.