Gamestudio is a nice playground, specially the majority of all members. The minority are hardcore developers and a field between are hobby developers. I personally don´t switch to unity and break up with gs. Reason are 3 open projects. But I buy the unity and swim slowly to the other side. Just because I like the sum oft the unity concept and I like the developer oriented workflow.
That was just my opinion. (and... I write this in a very defenisve position... I don´t believe that gs will survive the next 5 years. - and I love my hobby and don´t want to come to close to a no returning point with gs)