Under certain conditions, such as Bitcoin transaction fees, which are relatively high, I think the option to pay using one of the altcoins could be implemented.
In those conditions it's a good step to receive payments in altcoins instead of Bitcoin. In fact on this forum is isn't compulsory to go with Bitcoin payments only but still it depends on the convenience of the campaign manager if he's willing to pay the participants in an alternative coin then it's the best to have the payments in that alternative coin. In other campaign Royse has switched the payments to LiteCoin as of time being and I believe that's a good step taken by Royse in current network congestion times.
Truly as this platform is altcoin platform, it is possible that payment can be made in any crypto currency that is very much easier and convenient for the manager and I strongly support the idea of alternative payment as it is that Bitcoin chain is very much congested at the moment and as such, resulting to delay in transaction confirmation with high fee to confirm transaction which most people are not comfortable with.
It is good manager Royse777 made a good decision to suit the current situation as this is a very important one and has to do with payment of participants. His decision is absolutely the best for the moment