I tuned my bass like a cello (CGDA) and so far I like it a lot. The C string is a little hard to control since its tuned down so low, but the tuning makes chords a lot better (Major and minor chords are in a 3 fret area 😃). I might go down to a music store and see if they have suggestions for what to use for the low string. ponder
edit: after playing with the tuning some more, it offers pretty easy shapes for major and minor 6th/7th chords o/