keep the S and get a Sonata/Optima or Elantra/Forte.
Those cars are rock solid, top of class, and get great gas mileage.
on top of that, they tend to have more tech/$ than other cars (especially hondas)

your goal should be a rock solid fun car (S2000)
and a rock solid daily driver. (german cars DO NOT apply)

 

Into stereotypes? My M3 has been rock solid it's entire life. My Cayman S before that was equally rock solid, as was my wife's Jetta TDI. Yes, they're more expensive to repair and maintain, but many German cars are perfectly suitable for daily use.

 

keep the s. i had s2000 and toyota camry as a daily but i live in seattle and 90% of the time i drove camry and only 10% out of whole year i drove s2000. so i got fed up and ditched both and got into audi s4 but if i could do it again then i would of kept s2000 and bought something else to replace the camry. i just got really fed up with boring camry. but you are down in south. you have plenty of nice days to enjoy s2000. keep the s2000.

 

Keep the S2000 and get a new Jetta TDI. It has the 4 door requirement, enough room, decent to drive, and hard to argue with 45+ miles to the gallon.