[Tolriq]

You can also use the MC Choose widget to the choose Media Center as configurable button So many simpler way (All explained in the Wiki of course :p )

@Koying : For 1 this is not so simple since the sort menu is screen specific if I go on the logic this field should be screen specific too.

So if a user uncheck in the Tv Shows and click on a seen show it will see a empty season and don't understand while it's a global settings users more easily understand.
If I go global without a global settings then it may be strange too
I was thinking of being tied to either movie or tv show globally too but again not very intuitive

For 2 usually when a same user ask too much something it goes down in my todo list but you are lucky it's already in 3.3 :p I wont remove it :p

For 3 I don't really understand

To stream local this is before the stream plugin comes in action, if you never stream to upnp / airplay you can just disable it in the settings.
And for target upnp/airplay client this function is more a goodie than a main feature in Yatse.
Remembering the target would need much more deep handling or AirPlay and UPnP and for the moment this is not the goal of Yatse.