Multi track and collabs

Hi. Long time user of Mixmeister before Numark messed it up. MM had two features that set it apart. One was the ability to mix multiple tracks at once (MM v5+ was seemingly endless). The second was you was able to share the plot files / tracks of a a mix and send it to someone else with MM. They could add / amend the mix and send it back etc. If not present already, any chance? Also will the iPad app be compatible with Apple Pencil? BR Sly