Do we really need anything more than 8" woofer and 1" tweeter for medium size room?

If you listen to big orchestra and opera you are in trouble from all directions beginning with the recordings and the size of the room. Any system that can convincingly separate and reproduce 100 instruments? They don't even quite know how to record it. Understandable, that's very very tough. Suppose they managed to get it close, you will need half a million dollar or more system in a giant room to make it more or less believable. One can still enjoy it under more achievable circumstances provided the expectations are not high.

Maybe I don't anything over 8", but extremely happy with my 10" paper cone woofers, 5.5" Kevlar midrange and 1" aluminium dome tweeter of Aerial 10T speakers.
Obviously no need of any subwoofer. They go low-enough.

Bingo .. 

What's a medium sized room? Not having a dedicated midrange driver makes crossover points a bit challenging, often times putting the crossover just where music and our hearing are most sensitive..