I would think every Mika fan or band follower has their favourite band member, and when they eventually leave Mika fans who liked them will follow their career with interest.
Lukes departure hurt fans because of the way it was handled, and as much as I like what I have heard of Luke and his material, The new guy may have just got his big break, yes mistakes were made in hamjam, but it is early days and he needs time to settle in, perhaps he did not have enough rehearsal time before the tour started, and everyone deserves a break sometime, I will still follow what Luke does, so lets enjoy what we have, and to be honest I did not pay attention to him in hamjam, I was watching Martin in front of me and trying to see Cherisse, as well as Mika