My coop crew was into Borderlands 3 long enough to convince me to buy it on EGS... then we all got sick of it relatively quickly.
At least for me, they need to radically improve the 'Borderlands' mechanics to make an interesting game now. Borderlands 2 and 3 were basically Borderlands 1.5 or so.
More weapon slots, more power slots and more interesting powers in general, at the very least. But that will never happen, because of console controller button limitations.
Also, the standard problem of 99.999% of weapon drops being complete shit, has not gone away.