I would love to see more early and mid 80s arcade conversions. There are a lot of Atari games that never had a home port that should have such as I, Robot, Major Havoc, Peter Pack Rat, Quantum, Qwak, Cloud 9, and Fast Freddie, etc.
I would love to see quirky arcade games from this period such as Guzzler, Mr Do's Wild Ride, Do Run Run, Jumping Jack, Snap Jack, Changes, Faster Harder More Challenging Q*Bert, Krull, Kick Man, Domino Man, Timber, Two Tigers, Sarge, etc.
The Ed Averett news is awesome and I'm looking forward to what he will be supervising. I would also love to see a trivial pursuit style game such as Exidy's Fax or something similar that could bring an arcade twist to the genre with a top five or ten high score board.
Between Scramble and R-Type I would go with Scramble, but honestly I would rather Darius.
Another cool idea would be something like the Mario Party style games where there will be a board game and then mini games included to increase your chance of winning overall among your friends. Perhaps there could be an Ed Averett board game with characters and mini games from his games that are battling it out to win the board game?
Either way I'm excited for this and the possibilities.