MLS Expansion - Sons of Ben out in force at MLS draft
The SOBs did something similar during last November's MLS Cup.
However, I don't think the league needs convincing as it is the government of Pennsylvania that is holding the final key to this proposal. If they sign off on the $45m for the stadium plan, I think MLS will be delighted to give the city a team.
That said, it is great to see fans this involved in the process. Plus, the more media they get covering them, the more people they have asking state officials if it will happen.