In my opinion, having used Logos since its third iteration, the software is now at the point where the average user will never use all the features in the software. Some specialty users will, and a few even might find it limiting in terms of total features, but for the most of us, we'll scratch the surface on everything and end up using some smaller percentage of the software for the duration.
As such, I'd like to see more focus from Faithlife put on making the features that are there work better, more efficiently, etc., make parts of the software that were designed based on majority-use data customizable, address more of the items that have been languishing in User Voice, and I'd especially like to see more focus put on training materials, such as videos with worked examples, etc.
The absolute biggest drawback to Logos software at the introduction of a new version is the dearth of training materials. L6 has matured enough that training should get as much attention as marketing does. When L4 came out, a good number of higher-end users quickly got videos up in the wiki and on their own websites which were most valuable for those learning the software. When L5 came out, not so much (probably mainly on the assumption that since L5 was basically L4 with some added features, they weren't necessary).
With L6, we have a rather long list of new features, and very little material from Logos with which to work. I assume this body of material will grow a bit over the next few months. But I would love to see it grow faster and more than it has in the past, and not leave the training up to MP or kind volunteer lay-users.
While L6 stops short of requiring the use of a programming language like some intensive software packages do, the sheer number of features which focus on ancient languages for their use, coupled with a massive body of resources to use within the software beg for additional, Faithlife-created, user-interactive training much like we see with some of the industry-specialized software out there.
Satisfied customers who can access more features in the software, can find quick training when they can't remember how, and are comfortable enough with the software and support to recommend it to others may be a better marketing tool than simply piling on new features at this point.
FWIW.