Both are satellite, remember it. In orbit testing will be done for every satellite before put it on commercial operation. MEASAT 3D is also operable for DTH including other services also. Why there is no relevance.
No need of any Dish Realignment as the satellite lies in the same orbital location of Gsat10/30 that Tataplay using right now.Some users need a slight change in lnb sqew to get the signals in full quality .
You can move to Tataplay if you wish as the satellite migration is a sure thing and will happen in short time