Possible potential Mega-evolutions in future editions and Pokémon Z?

Viola with Masquerainite.
Ramos with Victreebelite.
Clemont with Magnezonite.
Olympia with Slowkingite.
Wikstrom with Probopasite.
Malva with Torkoalite.
Drasna with Altarite.
And Siebold with Starmite.

Probopasite and Magnezonite will be obtained in Ruby (Probopass) and Sapphire (Magnezone) Remakes only.

Any more ideas?