I never said I wouldn't take it into consideration, I said I was unsure. That's just insulting, calling me close-minded, you know? :/
Now, let's go over the whole thing slowly.
. silence vs cloak may be preference though as silence is easier to get out so it doesnt clog your hand as much as cloak. You need at least 3 novas to power it.
I agree with you on this one, Cloak is a hard one to pull off. But the point is that I manage to pull it off once I've drawn enough (Which I usually do with the SoBra's), but of course that's very RNG - ridden. But unlike Silence, Cloak gives us a 3 turn protection (Assuming no PC, and even then, you just made opponent waste PC on Cloak instead of on SoFree - Bonus bonus!) while Silence will only give us a 1 turn protection (Which is only blocked by Sanctuary.) The pros of Cloak is that it lasts longer; in the Con side, it has more counters. The Pro of silence is the lack of effective counters to it, and the Con is that it is only one turn of protection, which may or may not be enough.
I'd also like to go a bit deeper and say that, in this case where I attempt to get most Dejas out steadily, Silence would be a double-edge because it would lock the hand of the opponent, sadly locking my SoBra. Of course, if I time it well, that isn't a problem, but you might want to consider that as well.
For the ratio thing I'm not the greatest person to say hard cold evidence. But after doing 1000 games with this deck even each comparing every nova:supernova ratio I have observed that 5:1 is best, with entropy mark ive found 2:4 best. Idk what you would have if you included QT's or entropy pendalums or both however. I don't have that kind of patience.
Well then, please don't say hard cold evidence if there's really none to give. I was expecting something. Personally, I find that the six nova is better because there are many times when I end up with 1 nova and 1 supernova - And if that supernova were a nova, then I'd be able to play what's on my hand more effectively and even power the deja-vu ability by the next turn. But, this may be completely preference - I don't really mind which one is picked, but I -do- prefer the 6 nova better. I don't have the patience for Entropy or QT either.
Also silence helps you from being out rushed. Its better for both playing rushes and stalls. If your vsing a pure rush deck like Chapuz' deck which is the fastest then silence can give you the edge, and has gave me the win 4 times in pvp. (Always a fun match)
It's one turn. Also, please, what is Chapuz' deck? I have no idea which one it is, given he has made a few dozens while he was around. Silence can give you an edge, true, but against stalls I think that Cloak would be giving you the edge more. I may be wrong. Cloak has saved me just as much as Silence has (I tested a Silence version after my post for a while.) By the way, I mixed both the use of Cloak AND Silence and it does pretty well. It's interesting how they synergize.
I would recomend -1 bravery to +1 elite deja. #Consistancy. I used A=B=C. D<A. D was epi. I used 4 elite 4 unstoppable 4 sofree but only 3 epi because its tight on quanta, all about just piling out your hand. You can use bravery wisely against nightmare so thats why i like dumping my hand. But your true match up is vsing anyone with sanct. (Could try a explosion. Or improved steal)
Allow me to ignore the end of your sentence which didn't make much sense to me, about nightmares and sanctuary. It is true Sanctuary would counter SoBra. Nothing needs to be said on that subject.
On the subject of -1 Bravery to +1 Elite Deja, I may try that. True, 6 SoBras feels overkill at times; 4 deja may be better just for the sake of Consistency and nothing else.
Now on the topic of A=B=C=D, assuming A = Unstoppable, B = Deja-Vu, C = Epinephrine, and D = SoFree, I completely disregarded D. Whatever numbers you used for A, B, and C for their consistency, the number of D would be unchangeable simply because 4 SoFree is the number you need to get the 100% critical.
On a side note, I wish that SoFree gave Protection to Dejas, too. =P
TL;DR - I do find 6 SoBra to be a lot sometimes, but it also helps me draw the novas sooner in a sense, so I am unsure whether to change it or not. 4 Dejas are interesting to run, but I'm not sure if I want to sacrifice an Epinephrine for that (This is just my luck speaking - I almost never find these damn Epinephrines when I need them, so I might run 4 deja 4 epi if I manage to squeeze them in.) Cloak > Silence, in my honest opinion and shy preference.
And since I get this a lot.. =P
Disclaimer: I did not mean to be rude or to insult you in any form or way and I apologize if it came across as so. I'm really interested in the deck and in the minor modifications which is why I have replied as I did.