it may be legitimate to ask for Dev Report, but it's more important to understand, that lot's of Dev, and complexe Dev must be necessary to achieve this goal. If Artos work alone on this, it will take some time.
The only thing I fear, is that actual price, and time to "market" the mixing services push some fan to look/invest in another coin, which would be legitimate too.
For the question "is there any relationship between price & mixing services" I don't think it's easy to answer. Doge is a good example of heavy interest without real new feature. There is no true MArketing just giveway spam campaign. But it seems to work... at the moment.
Make a true durable coin is an hard way.