While the answers about the registration lines have been vague and dodgey at best, I do think that things will be better this year for one reason - registration won't be at the Fairmont. I don't know how long you have been going to Fanime, but for the last 3 years whenever a major event has been held at that hotel, it doesn't go well.
I have, since 2010, gone through registration late Friday morning. Since 2010, my wait time has doubled every year, regardless of where registration is held. In 2010, I waited 45 minutes. In 2011, it was 1.5 hours. In 2012, I spent 3 hours in line. In 2013, I made a last minute decision to attend Animazement instead, but had I not, I'm sure I would have been waiting six hours like many others did. I don't think that, in terms of registration, the location is the issue, but perhaps it boils down to staffing and/or registration method.
What bothers me is that nothing sounds like it's going to change. When Fanime higher ups tell you that, despite the 6 hour wait time, last minute guest announcements and a guest list that was largely lackluster, it was a great convention, you not only question where exactly the convention is heading, but if you want to be there for it.
I think many others would gladly pay a few dollars more for assurance that the line would move faster. However, suggestions like this have been made for years, and so far nothing has been done. I think the idea to charge $10 more for mailed badges has been suggested since around 2009-2010, but Fanime hasn't done it for "security reasons". It's definitely a nice thought that they would implement stuff like this in the near future, but it probably won't happen.
I understand why Fanime won't send badges in the mail and I remember the last year AX tried it, it was problematic. My badge arrived late on Day 0, but I had already left for the con earlier that morning. Send out the badges too early and people will counterfeit them, and send them out too late and attendees will leave before their badges arrive.
Fanime will eventually need to decide how big it really wants to be and if it has the resources to sustain those numbers. Perhaps having another con running concurrently with Fanime is a good way to solve that, but it seems unfair that attendees are not able to select where their funds will go.