there would need to be a way to mark the the bitcons I receive so that I can only purchase equipment with them from certain manufactures that will sell me products that have been tied to the bonds somehow.
If you want to give people money "with strings attached" then I think the better direction to go is CP-ABE, see my posts on distributed investment funds. Smart property isn't really relevant to that use case.
I think it should be stated what the whole point of this "auditable funding" song and dance is. We want to have a stock/bond market where all parties can keep their anonymity. Anything less will lead to a shutdown by government forces and if you think otherwise I believe you are being naive. In a crypto anarchist system where there is no government to enforce contracts alternatives must be sought. Smart property in the use case I described is one such way.