It's only 2 weeks, why can't we put up with the rain? Afterall, it does make tournament unique and interesting! I mean if you're going to start changing things where's it going to end? No grass? Leave England?
Some smart alec (can't remember who it was), said they should have a removable court that comes in on rollers (a la that Korean stadium). Good idea in principle, but if you look at the surrounding areas near the main courts, vital parts of Wimbledon would have to be demolished and relocated, costing a ridiculous amount of money. Mind you the LTA may as well spend some money cos no-one has a bloody clue what the dough that they get from Wimbledon gets spent on.
A roof is a bad idea, look at Amsterdam Arena when fans put a cow on the pitch to show how bad it was...
There is another idea. Get rid of the grass and make Wimbledon a hardcourt tournament. Now think of the arguments that would cause!