Well it means Mepham will have a solid PL run under his belt which isn't a bad thing at this early stage. As long as there aren't risks of long term complications to SC then there could have been far worse blows to out options for the next six weeks. Which isn't a slight on SC even though it sounds like it, more a comment on the lack of options in some positions given other players that are out at the moment.
Mepham is only an "average championship player" according to one of your recent posts. According to Eddie "he has come into the team and has not looked a new player, which I think is a huge compliment."
You've judged Mepham far too soon, and you have no idea what his market value is.