Re: secret rolls in the "rolls" space
I've been thinking about this -- the difference between saying, "I search the room," stopping, and waiting for the GM to roll and tell you the results -- or saying, "I search the room," making a roll you can't see, stopping, and waiting for the GM to tell you the results...
...is clearly not a big one, mechanically. And it's very much the kind of roll that, at the table, if the GM wants kept secret, they would traditionally just make behind a screen.
But, 1) I can see where it would be a little bit simpler (and in some ways more intuitive) for a GM to be able to do a Secret On Behalf Of... that gets connected to that character (for when the GM uses their "Rolls" link), but that the player still can't see; and 2) There is a different psychology to that second sequence, and it feels like a good psychology to me. There's a tension there that isn't; once the roll is made, it feels done. When the GM is going to come and roll later, well, heck, anything could still happen. It's all in your head, but it does feel different.
So, well, I guess where I land is, if BBR is right and it's just not doable, then it doesn't feel like a particularly big loss to me. But if it is doable, I think it's very interesting. Enough to get a +1.