Just because the bitshares network gets popular and is useful... doesn't mean the bitshares token will get any more valuable.
Holding the token doesn't do anything except give you voting rights. Plus the network is operating at a huge loss right now because of witness pay and worker proposals. Until fee's are brought back into the fold and the network becomes profitable, there's not really a point to holding the token. In fact many of the projects using the BTS exchange for their UIA's accept funding outside of the DEX and distribute their token after they receive actual bitcoin or cash... this means there is literally no reason to buy bts to enter the ecosystem.
Once the merger is over, the downward pressure on price will be much less.
If BTS backed SmartCoins grow in popularity as a product they will create net BTS demand for many years to come and as a result increase the value of BTS. As the product matures, the SmartCoin market can then be monetized via trading fees.
However the primary business model for BTS continues to be SmartCoins imo but they do require BTS to introduce liquidity subsidies and continue to make the DEX as user friendly as possible. (I'm also in favour of Yield subsidies for the period of time SmartCoin growth outpaces it.)
If demand for Smartcoins (Backed by BTS) grow over time then demand for BTS will grow with it until such time as the SmartCoin market reaches maturity. (Possibly many years in the future.) At that stage you would monetize your customer base through transaction fees in order to generate a return for shareholders like a more a traditional business. (As well as sell them other related products and services on BTS.)

Another business model on BTS is also a pure DEX model with trading fees for a range of user issued assets. While less lucrative imo, with CEX's like Coinbase valued at >$500 million there's also some potential there by growing that market to become the leading DEX & monetizing that customer base.
(We also don't need to add trading fees for the DEX model immediately either, user numbers increasing will increase the value of BTS because the market will price in their future monetization value provided they believe it's credible we can charge and still retain them in the future.)
I don't believe that an increase in demand for smart coins will ultimately lead to an increase demand and price for the BTS token...
Aside from the lack of acceptance and fungibility of smart coins the key problem is that there is no reason to create coins.
The only reason to create smart coins is if you think that the value of BTS will increase relative to the value of the smart coin. Since the network (workers and witness's) are currently being paid in inflating BTS there is constant negative pressure on the BTS price. If I'm a rational investor, there is no way I'm going to short with a naturally depreciating asset as collateral. The only reason I would consider using BTS as collateral would be if I could somehow discount getting future profits from the BTS token. The network needs to figure out a way to make money to sustain itself... if it does, then the BTS token will rise significantly in value. Just having an active network does not mean it's profitable or valuable.
Basically the bitshares holders are paying all the transaction costs for UIA and smart coin traders. It's the strategy now to attempt to gain users, but it will need to change in order for the network to survive.
Personally I think focusing on a few smart coin markets to add ample liquidity and then adding higher trading fee's to those markets. Promote those markets to forex traders (I am a forex trader). Forex traders would have no problem paying say a 5 or 10 cent transaction cost as long as there is liquidity and security. This creates revenue for BTS, which will increase the value of the token, which will increase speculation that bts will rise vs smart coins, which will increase smart coin supply, which will increase liquidity, which will attract more traders, which will increase network revenue.... virtuous circle