This is the perfect theme for the business traveler. It's not going to draw a bunch of rowdy 21-25 year-olds, and it will hold just enough nostalgia that the 40 +/- business traveler can strike up a conversation with a stranger about the old IJ movies. I'm sure I'll have a few beers here on my next business trip to Orlando.
As for expanding on the Trader Sam's success, I'm pretty sure the Reggie Boat was in place before TS opened. I think both places draw a similar crowd, and that's who Disney is looking to cater to, but I don't think the theme changed here because of success there.