I have a propaganda for you all.
I hope that this works. Because its the only idea I have to get the DVD sales up.Post all over the web what DVD sets you got.
That means on Twitter, Facebook, You-Tube, or whatever you can think of.
Post it to let funimation know that people really want more One Piece. And to also let other people know to actually buy One Piece.And actually, if you're trying to get someone into the series, tell them to get Season 1 1st Voyage. And then tell them the amount of DVD's that have been released by funimation. That should reduce this scare of "OMG! THIS SERIES IS TO LONG!! T_T"
It really shouldn't take much effort at all. But just get the word out. And tell other people to do the same. Tell them to post what DVD's of One Piece they have.
This is the only idea I can think of. Sorry if it sucks.
May I make a couple of edits:
1. I believe the word you're looking for is "proposition" ;)
2. It strikes me that the best places to post these photos is on Funimation's Facebook page and however it works for Twitter (the thing with the at sign, I think) - I'm pretty sure that someone from Funimation has to keep an eye on those so if they notice a bunch of One Piece DVD pictures suddenly cropping up they might get the message