I'd like to see more than 50 exchanges (at least) in order to be able to talk about some independent price formation, and stability from within the system.
sure thing! Talk is cheap. You should start an exchange.
If you read to the end, the post was really just a clever pump of XRP
haha =) but also a good point, if we want a lot of public independent btc exchanges, ripple is a pretty good bet =)