It seems to me that Counterparty has a lot going for it but will it always be considered "slow" compared to other 2.0 tech since it's based on Bitcoin which takes a long time to confirm transactions?
The developers chose Bitcoin because they think it's the most secure blockchain (this is debatable). I agree with you that Bitcoin's slowness is a major drawback for Counterparty and that it is hindering its adoption. However, it's possible for Counterparty to move to another blockchain. If enough people complain about it then they might do it.
The reason I still haven't sold anything is that they could port it to any other blockchain anytime and Counterparty has the least legal baggage which is an asset. The Counterparty team has all it needs to come out as a big player in the industry. I just wish that they would think a little bit more visionary since Bitcoin / Proof of work and running a meta protocol on a (Bitcoin) network that is secured/powered by inflation is economically flawed.