My first builds of UR-bonus round did not include ruby at all, when probe got banned i had found this thread and thought i just switch the probes for ruby medallions just to try. And well, they are still there :) I think it's wrong to cut them. They help so much vs taxing decks and enable a lot more turn 2 kills (but i play with desperate over LED, so might be that). I never sideboard any out, i did vs fast combo for awhile, but the more i play with them the more i realize just how much speed they give. I don't have numbers, but it feels like they are involved a lot in my t2 kills, plays like t1 cantrip, t2 tomb desperate bonus manamorphose burning wish or similar.
I did try out daze, felt great my first 2 matches vs ANT and Show n tell but it felt really weak vs control. They gave me some fake confidence to go off vs an untapped island, hoping they only have spell pierce and then they fow or flusterstorm me. But if i instead wait they get so much mana that it becomes irrelevant. I dunno, will try some more games.