In my opinion, the fundamental value of BTS is dependent on trading volume and value of smart assets they back. The long term trends suggest that these will continue to increase as time goes on, given tailwinds of regulation and problems with centralized exchanges. But there is a large speculative value attached to all cryptocurrencies, including Bitshares, which should be kept in mind. Disclaimer: I am not an investment professional and this is not investment advice, this is just my opinion.