It would seem they're testing this idea with Piranas at this time, they'll get back to us once me and the other 5 piranas players in the world make a conclusion
UR had already implemented this idea a while back. There were No/All Dr weeks, No/All SoA weeks etc. I wasn't that active in ELO during that time though so I do not have any thoughts or opinions on that.
I guess the average ELO player would fancy a fun ELO week but I'm not so sure about them ELO fanatics who fancy the mode for the score than the plays.