I've been reading a lot lately and have gotten very interested in alternate tunings.
You know me

, I'm always on the look out for new gear... but after a while it would be pointless to have a stable of basses all tuned to the same pitch. I won't buy an ERB because I don't like the feel, I much prefer my fours. In my master bass plan, I have five standard-tuned basses. More are always welcome

It won't be for now though, I'm nowhere near good enough to expand beyond E standard. (Or like drop D.)
Wow anyway /rant, my actual question is how many different alternate tunings for four-bangers do you think are practical to have going at once? (As in, if one had a bunch of basses perma-tuned to alternates, what could they be?) I have BEAD, ADGC and DGCF so far. Opinions?
--Silvie