Ampeg THINKS they have answered this request with the 410HLF and 212AV.
But those of us who hate ports and tweeters know better.
I like my 8x10 and all, but I've been using a 2x 112AV stack a lot lately and it's darn close. A knob tweak or two and it's in the same territory (I leave the tweeters off).
My current amp/cab roster is a 72 8x10, 75 B40 4x10, and the two 112AVs with either a 74 SVT or 73 V4. My favorite combo is still probably the V4 and 4x10, but ports and tweeters be damned I'm not unhappy with any of them.