Me, I'm not sure why people are freaking out and threatening to cancel their vacation over Test Track's refurb. I mean, the majority of the time I've visited Epcot, I wasn't able to do Test Track because it ended up breaking down. We're talking about a ride that has the worst track record when it comes to breaking down. If the refurb does anything to cut down on the tendency to break down, I'm all for it.
I would have totally postponed my trip a week so only 1 headliner would be down (we're leaving the day before BTMRR is scheduled to reopen), but now that it sounds like it's behind schedule, it's really a moot point for my trip.