Same ones I've been wanting for twenty years,.......
Armalite AR-16,.......7.62x51 version of the AR-18/AR-180
Remington M53,.........45ACP version of the M51 that competed against the 1911.
S&W 3946,.........single-stack all stainless DAO 3rd gen 9mm auto. Smith catalogued it. Midway and others claim to carry parts for it. I believe S&W might have made five of them. Eventually I'm going to clone one with a 5946 slide on a 2nd gen 639 frame. Have the parts; don't have the ambition.
Kudos for the Mars pistol vote. "His ideals ran in the direction of High Ballistics, and his pistols accordingly took on the form of young cannon." - London Times reporter's description after meeting H W Gabbett-Fairfax while attending the British military trials of the MARS pistol.