Time skip sounds cool, a month/years, doesn't matter. A little change in the luffy's art or something would be great (taller?) because I think it's just about time anyhow. The series have been running for a lonnng time now so I think the art refresh would be great. And besides, it's been too long for the crew to have been separated with each other. Too many fans are crying in their beds already. AND, last but the most important piece, it's ODA-sensei who's pulling this off, so off-screen powerups or plot twists or what not, I'm sure he could take care of it beautifully.