One thing often overlooked by those wishing for a specialized model (whether new features should be added or existing ones removed) is: what's the market for the item? One is talking about setting up a different production line, revising cirucit boards and parts, making changes to cases and connections, etc. If they do all that and then don't sell very many, the company loses money. Or, if they increase the price of an item with fewer features with the expectation of a lower sales volume, then it becomes less attractive to buyers when, for almost the same money, they can have have it all, just in case they change their setup.
I have no clue how many units of each of their current models that Wiim has sold and expects to sell, but I'm sure they've taken the above into account. It wouldn't surprise me if they've already looked at a DACless streamer option and said, no that's not our market. But, who knows, maybe they have, and its already in the pipeline or on the drawing board. Only time will tell.