2. Looking up monsters. I don't have the entire MM memorized - I don't know what each creature does. During combat, I either have to have a copy of the stat block or the book in front of me and I am constantly shuffling papers around. Having monster stat blocks available to me at a click of the mouse sounds much more efficient.
What bothers me most about this feature being added is there is no good reason you should need this. A well-written adventure would have inline monster stats right there in the encounter.
That the current 5e published adventures don't is a sign of atrocious layout and design and a big reason I won't be purchasing any WoTC published adventures probably ever.

The same for me as well, along with:Those are exactly the two use cases that are making me consider it also.
I write a lot of the adventures/encounters for my players already - what I would really love is the ability to 'drag and drop' WotC stat blocks or otherwise import them into my session prep documents.
I use the 2 Lion's Den apps (Fight Club and Game Master), which only costed me 3 euro each, IIRC.
I still don't see what Beyond does that it's not included in these much cheaper alternatives.
You can cut and paste stat blocks (plus spells, etc.) into a document from one of the online versions of the 5E System Reference Docs (www.Open5E.com and www.5thSRD.org both work well). It is not perfect - you will need to tweak the formatting, and the SRD doesn't have everything, but it is free and easy. I have been using it for session prep for a while now and it is a big time saver.
...and the SRD doesn't have everything, but it is free and easy.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.