For pronunciation that is...
Have a look at Genesis 2:15 in Logos...

How do you pronounce/transliterate the last two Hebrew words? Most beginners would say, "l'avda ulshamra." Now take a look at the same verse as published by Machon Simanim in Israel. (Click on the photo below to see it in high resolution)

Now the Hebrew student would say le'ovdah ulshomrah.
Some would say these kinds of distinctions are 'unnecessary' because if one studies all the rules and becomes an expert, they wouldn't need helpful guides like this, but is the Hebrew text in Logos only supposed to be for experts who only all the rules? Or to be accessible and open to those who are new to the language?
The approach of Logos software (and of Lexham with their high definition NT and interlinears) is to make everything as user-friendly and helpful as possible to the non-academic. Of course this doesn't mean scholars don't adore Logos, but that the software is incredibly useful and not limited in scope for scholars only, but is open to the everyone. It is for this very reason that I believe having a Hebrew text like this for students would perfectly fit with the approach of Faithlife.
The next objection the nay sayers will raise is, 'this kind of visual distinction is not that common,' but that's not true at all. Apart from Simanim who publishes Chumashim, Tanakhs, and Siddurim, numerous other Jewish publishers produce 'Tikkun' editions and Siddurim like this, such as:
The Koren Sacks Siddur: A Hebrew/English Prayerbook
Hebrew Daily Prayer Book
And that's not even including Jewish software like
TropeTrainer™ or Tefillah Trainer™
But the gold standard for pronunciation is Simanim.
They have visual distinctions for whether דגש is קל or גדול,
and numerous other features.
It's an essential and must have feature for every Hebrew student in my honest opinion.
It is my hope that Lexham would consider upgrading their Hebrew Tanakh to have these features in the future sometime...
If they needed help, I have experience with upgrading existing fonts to allow for these possibilities, but the team at Faithlife are so great at what they do, that I doubt they would need any assistance.
Thank you for your consideration.
David R.