I think the Vcash system + Ribbons would be enough incentive to get people to take the few mins to submit what challenges they completed, but i do think that the challenges should be obtainable to all players not just the top guys. The way that i tested it out last night was i chose 4 easy, 4 medium and 4 difficult and i believe that it worked out fairly well. The number of challenges can be lowered but there should always be 1 or 2 challenges that are fairly easy to obtain though they can be worth quite a bit less that the difficult ones.
If this gets implemented we would choose the challenges based off of what maps were coming up in the upcoming battles and a few that are general.
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