Honda should make a medium sized coupe with;
all wheel drive, or atleast rearwheel drive
v8 with twin turbos, with a 8-9k rpm redline
Build the entire car out of aluminum w/ magnesium wheels 
Use a minimalist philosphy (no luxury bullsh!t like sunroofs, wood inlays, etc.) and keep the weight <2700 lbs
And sell it to me for 20k 
Seeing how honda routinely squeezes 100+ hp out of one naturally aspirated liter, a TT would put out maybe 150 hp/liter.  Say it's a 5 liter v8, that gives 750 hp.  So what, a Qmile time in the 10-11 sec range?  Well, I can dream right?