Have you ever tried blending commercial wines to see what you come up with? After all, many wines are created from blending by the wineries, why not do it at home? I'm thinking of doing some experimenting to see what I can come up with.
The only time I blend wine is when there is not enough in one bottle to make a full glass. Then whatever wine I have open in the fridge is what I blend with. By the time that happens though, it all tastes pretty good. Sherry doesn't blend well with anything though.