1.Is kodi installed ?
We preinstalled KDplayer instead of Kodi, you can download some add-ons in it. It's the same function as Kodi.
2.Does it have mirrorcast feature?
Yes, you can download mirrorcast from Google Play Store.
3.Does this Tvbox have bluetooth capability?
No not that I know of
4.Can this be used with a projector
Yes, T95 S2 Android box can work with projector.