Structurally I think we have a few things to think about:
Account Structure. Currently all funds are held in a PP account and bills are paid directly from PP. If we integrate a second payment option we need to then explore options for financial consolidation. Other than banks I'm not sure what the capabilities are when crossing various fund transferring services. To be clear, MadCast does not currently hold an account with a financial institution that participates in fractional reserve banking (aka a bank). Being a not-for-profit community means 100% of donations go right back to the community and as such the balance never reaches a notable value.
Integration. We utilize add-ins designed to work with PP and the software that runs our site. Ease of use is integral to maintaining a steady donation stream and we certainly do not want to make things more difficult to contribute to MadCast.
Audience. Measuring the gain of additional donation options is more of a factor than one might think. It's not as simple as "well at least the option is there". In addition to the reasons noted above we need to evaluate the cost/benefit ratio of expanding our financial footprint. For example if the decision is made to create a bank account we have to evaluate the cost of fund transfers, banking fees, currency conversion (why that is a fee makes no sense to me), and I'm sure other factors.
Legality. I'll leave the details of this one to those that have educated themselves on law. What I do know is that creating a bank account is not black and white. Establishment, location, ownership, and again I'm sure some other factors muddy the waters a bit.
Understand that I am not against the idea, and in fact encourage any ideas that may help better MadCast. I just want to be clear that this type of decision is much more complicated than simply voting yes/no.