I preferred the old 48-team field with 8 regionals of 6 teams each in a double-elimination tournament. It made for a VERY festive near-week of college baseball, with so many fans from different teams all coming to one place.
You also had a true double-elimination tournament in Omaha which I prefer slightly (except for a few years when it was double-elimination until the final game, and a team coming out of the loser's bracket could beat a team that hadn't lost a single game, and "win" the championship, like stoopid Wichita State did to Texas in 1989. Bastages. But I digresss...)
But with the current format, there's at least some nice symmetry. The regional is a 4-team double elimination tournament, the super is a best of 3 series, and then the sequence repeats with a 4-team double-elimination tournament in your side of the bracket in Omaha, capped off with a final best of 3 series for the championship.
Pretty much all of the changes have been made to package it better for TV, so whether I like it or not, I must live with it.