Ioff screen roll sucks - result is not interesting, adds frustration and waste time, and encourages save-scumming
Perhaps, but much less so when playing MP
I am not so sure about letting people know they failed checks. The biggest advantage of such roll system would be that players would be informed of a positive outcome only. I can understand that it might be useful in Coop setting, as it can allow players Who failed a roll, to drag a friend over. However, first of all that is silly. Character who didn’t notice something, wouldn’t know about it (I get that in PnP he would be asked to make a roll, but that’s a necessity not a feature)
Perception checks should definitely be hidden. The rest? Maybe, but I don't think it can truly be D&D without rolling the dice.
