@georgeob1,
The DNC never has nor ever will appease Bernie supporters. As for any rule changes, it depends on what an average of democrats thinks of it, not just Bernie supporters.
Regardless, Bloomberg seems to be doing alright without the DNC or being on the stage, which probably explains the DNC changing their rules.
I personally don't think they should have done it.
Biden is still very much relevant and is basically tied with Sanders in Iowa.