Ok, so we're agreed that you do have to be isolated on the insular group in order to avoid the spammy notes, but you're proposing that being able to easily switch to spammy relays solves for that.

I suppose when the turkish rug enthusiast relay goes down, we take a break from talking about turkish rugs? What if it never comes back?

And why can't both spam and communities be solved at a client level to achieve the same thing? 

 The group can have multiple relays, obviously. 

 They could too, more options is better