I started in Wave 3 and only attended one regional before Wave 4 and World's that year, but the 33 points required for a win really didn't have to do with people "boxing" up their list (I think the best lists from the Wave from that era of X-wing prove that) and had more to do with the fact that a 33 point difference led to more modified wins than they wanted.
Big ships holding onto MoV was actually an exploitation of the MoV system that you said was devalued when they went to 12 points and it made it very difficult for 4 ships lists to make it to the top. (BTW, 12 points counted as a full win, no a modified win -- minor difference but the difference is a TIE fighter).
I'm not sure what you are talking about regarding devaluing of MoV because the Advanced Structure maintains a top cut all the way through (p17). In events like the System Opens, we're still seeing that MoV matters as even though you make it to day 2, a poor MoV can drastically change your chances Day 2.
Anyway, I think that most people understand that it was a problem that Modified Wins essentially penalized you in both tournament points and tiebreakers since a Mod Win was based on the a low MoV. Now, a win is a win is a win.
Yup, a win is utter.
In the final you used to have to fight to the death so taking a deliberately low value list like a solo Whisper was pointless. You had to fight it out.
Now, 1 point more than your opponent is everything.