Sorry can't help myself
I know there's still plenty planned for the Logos team for the next few months, but dreaming about 12 months down the track....
It would be great to have a better way of doing finding textual critical information in Logos, at the moment some of the apparatuses are available in SESB and there are books on the subject and a new collection in prepub available. The TENTGM series is great but no real advance on using the print version.
While producing an electronic version of a print apparatus is useful, there is the potential to do it so much better! Since you're designing for software use and not limited by paper, why not build a Logos text-critical greek bible with every known variant from every known manuscript? If you succeeded in this Logos would become the standard for any serious textual critical work.