Grin is not competing with BTC. It's more privacy focused. It is also a plataform where new ideas are going to be tested , and in future those ideas may be applied to bitcoin.
New projects and ideas are always good, but they are not necessarily competing with older ones. They can coexist and complement each other
What would Grin best compare to? I understand it's meant to have a stable price for transactions which seemed to be Bitcoins original intentions; at least at first. Now it's more store of value-like?
Would you say BEAM is closer to bitcoins model?
and What about Nauticus?
Most people on here know my stance on Nauticus. I think there's a bright future with that company. As far as BEAM and Grin goes, I've only heard of BEAM. I think there may be something there (diamond in the rough), but idk enough about it to make an accurate prediction.