Create designs for making player dice pools visible to all players

[sentinelgreg]

[sentinelgreg]

@gareththegeek I have forgotten what exactly we discussed here.
We want to reimplement a dice validation check, right? At least two dice that aren't d4s? When players have a valid dice pool they are considered to have "joined" the contest?

Then valid dice pools will show up for all players.

Do I have that right?