You're right – the JW was proposed in 2007 along with Lucas Oil Stadium's construction, RCA Dome's destruction, and the redesigned CC.Did a little checking. The JW Marriott in Indianapolis was proposed in 2007 as part of the Indianapolis Convention Center redesign. Indianapolis did not win the SuperBowl bid until May of 2008. As i said. proposed hotel project will probably be pushed through faster to make sure they are ready for the event, but no one in their right mind would say "we're getting the superbowl, we should build a hotel." There has to be enough market demand in place on a regular basis since it takes a decade or two to recuperate the initial cost of building a hotel.
Indy also suffered from a lack of hotel rooms. I don't think that's as much an issue here. But with all of the development surrounding Vikings Stadium right now that's still unfinalized, I don't see any outlandishness in a hotel being included in there. It's a new major events area that's only going to bring more people downtown.
Of course, now cue the "10 times a year" people to say none of it's worth it..