Lincoln doesn't need a super-car.
What Lincoln and Ford need are a few RWD platforms to build great cars on.
I think the S550 stretched a few inches would be the perfect platform for a 2 door Lincoln coupe successor to the Mark 7 and 8. Give it all the fancy electronics and upscale interior options, have a lightly tweaked ecoboost v6 (400 - 430 hp and 450+ tq) as the base engine and a detuned version of the Trinity 5.8 (think GM's LS9 - ZR1 Vette and LSA - CTS-V and ZL1 Camaro) or a coyotified 6.2L as the "sporty" optional engine (something around 525 -580 hp and 470 tq+). Give owners the option of either a manual transmission or a solid automatic. Throw on some nice adjustable suspension on the high end version (comfort, sport, etc) that actually works. Price the base model just under the CTS coupe and the sport version just under the CTS-V, give it classic Lincoln styling and Ford will likely have a winner.
Then bring out a successor to the Lincoln LS. That could be easily built off the Australian Ford Falcon platform. Give it similar options and specs as the Mark X, again, another winner. Ford could also replace the Taurus with this platform and compete with the Dodge Charger / Chrysler 300, Chevy SS, BMW 3/5 series. Maybe a stretched version of this could be the next Town Car.
Then bring out a replacement for the Navigator, even the new 2015 model isn't up to what the previous generation Escalade was. Or just keep on keeping on as the Navigator may not sell well but it is a huge profit machine for Ford.
Or just scrap Lincoln all together..
99 Chevrolet Camaro Z28 M6 - 6.676 @ 103 in 1/8, 10.512 @ 130.2 on street tires, H/C/I
93 Eagle Talon TSI AWD 5spd - Built 6 Bolt, 16G Evo3, HKS 272 Cams - under construction