Why no modern mid-engined smaller displacement V12?

[suigeneris]

Some of the best sounding cars of all time are smaller engined V12s. Think Miura, 70s F1 cars, etc. There are plenty of 5L, 6L etc V12 cars around but most of them are GT cars or theyre heavy because of higher displacement and dont handle as well as the V8 supercars. We can understand why Ferrari and Lamborghini save these larger V12s for their flagship cars, but I cant fathom why ANY manufacturer has come out with a mid-engined V12 car with a smaller displacement (3-4L) designed to be higher revving and sporty handling. I know everything is going turbo charged, but with all the new cars Ferrari is coming out with surely there is a niche for this?! Surely I'm not the only one who wants a lightweight supercar with mid-engined V12 sound?

[suigeneris]

andrew said:

consumption rules, emission rules, noise rules, build cost constraints, perceived servicing costs, crap investment payback, perceived complexity and reliability...
sad though

I can see all this in principle, however are consumption and emission concerns that really that different for a 3L or 4L V12 compared to say the 5L V10 in the Huracan though and build/servicing costs and reliability for an extra 2 cylinders really a factor for a smaller engine thats made well these days? In fairness also, isnt crap depreciation really a factor of the *type* of cars that V12s are going into (i.e. flagship cars that have deliberately high sticker prices to begin with (along with higher pricelist servicing costs to go along with that) and basically because of the fact that V12s tend to go into more GT cars nowadays that have always had poor depreciation compared to sportier models rather than the fact that they have a V12 to begin with. Also presumably consumption wouldnt be that bad for say a 4L V12 in a light car vs a 5L V10 in a heavier car? Combine all of this and I'm still really surprised no one has created a lightweight mid-engined car with a smaller V12 as surely there are lots of enthusiasts whod be all over this?