Just curious but those of you who have Thunderbolt on your MBP's would you rather those would have been extra USB 3.0 ports instead?
My scenario: I have a fully loaded late 2012 27" iMac, running 1 Thunderbolt to HDMI for my 24" monitor, the other Thunderbolt goes to a LaCie SATA hub (which has 2 powered eSATA connection for my 2 RAID-5s), then it goes Thunderbolt out to my 20TB Drobo 5D, from the Drobo it goes Thunderbolt out to my 42" LCD. Granted, I'm a film editor and motion graphic designer and I need the power, speed, and expandability of Thunderbolt to keep me and my company on top.
Does the average person need Thunderbolt? No. USB 3.0 is fast enough for most and overkill for some basic tasks as it is (unless you're copying/moving/creating 200MB+ files, the average person won't notice the difference since they're most likely downloading music and uploading pictures from their camera). Thunderbolt allows so much more connectivity due to the insane bandwidth it can hold (like
this little gem all from one Thunderbolt cable).
So, to answer your question about Thunderbolt being replaced by a few more USB 3.0 ports, my answer is no way. I can't function without Thunderbolt anymore...it's the ultimate connection for so much more than "fast transfer speeds"