My only regret so far in relation to our 06 LJ Rubi is... Renting an apartment instead of a house with a garage. We need a garage for our Jeep projects and a hoist for our hardtop. That sucker is a beast to carry around.
And of course, I wish my hubby and I had managed to get our hands on the LJ sooner since we've really been enjoying it together. But we're only 10 months into our marriage, so I suppose that's not too much time wasted.