That's what I think. They're not going to change with every passing rain shower, but weather reports are increasingly reliable, and if the rest of the day looks good, and you have, say, 3-4 more sets to go in a men's match, why not open the roof and make the court less slippery? As to the notion that it's an outdoor tournament...well, it always has been, and Wimbledon of all tournaments has been wedded to its traditions. Somehow, they managed 120+ years without a roof as a completely outdoor tournament. They need to fall out of love with their roof.
Starting at 1:30pm on Centre Court in the first week is what I don't understand. I completely understand that they have an 11pm curfew, because the club is in a residential area. That's respectful. But, as we say in the film business: "If this were my movie...," with a hard-out at 11pm, I'd start earlier. Tennis is an open-ended game with no time limit. Personally, I think they're idiots.