Are you a bass player who also plays cello?
Cellos are tuned in fifths, like a violin or viola. Fifths require position changes on a cello, because it is larger.
My question is this: as an accomplished bass player, do you think cello would be easier to play if it were tuned like a bass? In fourths (EADG)
i'm an orchestra teacher, and have dealt with this idea and every variant of it over the years.
i think defining your goal is important. if you really want to play cello, i don't suggest you do anything other than learn cello - preferably with a good teacher to guide you. it's such a well designed instrument, and obviously has an incredible sound.
if you're a bass player who wants to play cello-ish things, i think tuning a smaller double bass A D G C is a very cool idea. Bozo paradzik does this and plays full sonatas for cello from brahms and beethoven, masterfully.
if you are looking for something new, like the idea of the cello (tenor range, size, etc) you may want to consider the viola da gamba. it's a different sound for sure, but a really beautiful one. having frets and being tuned in 4ths (with a third) makes it more closely related to the bass, or the lute/guitar.
I am a competent cellist, professional bass player, and now well on my way to competent/professional gamba player. Each path serves a reasonable purpose.
I find it very interesting the history of each instrument and how they were conceived, developed, and refined over a long period of time. The cello is tuned in 5ths because that is what works best, even if your first instrument was tuned in 4ths. Adjusting to the new tuning is really no big deal and definitely worth it, i think.