I think presets that are rules enforcing and move displaying should be mandatory mostly because otherwise how you would notice errors made by both players? There are other issues easier to spot. But these would fall on you as organizers and who else would like to help as an serious tournament should first and foremost be fair. Also I'd help with such error detection tasks but isn't that a conflict of interest?
@Greg,
As you had assumed I'm still in.
I think presets that are rules enforcing and move displaying should be mandatory mostly because otherwise how you would notice errors made by both players? There are other issues easier to spot. But these would fall on you as organizers and who else would like to help as an serious tournament should first and foremost be fair. Also I'd help with such error detection tasks but isn't that a conflict of interest?