I like my WF1 and I am sure with A7LA55 + OV4689 it will produce even better video, but biggest drawback for me on this model is it uses a battery. If they would change battery to capacitor, then I believe it would bring more even attention to the product.
Is there an A7 version of the WF1 in the works? (if so, please list source) Or, is this just dreaming? And yes +1 for no battery, needs high heat resistant capacitor.
The current A5 version has excellent WDR/Night Vision already. https://dashcamtalk.com/vico-wf1/#Specifications
A7 would allow simultaneous WiFi Streaming while recording. (+ GPS)