Dynamic conditions, i.e toggling on a condition actively changes the digital character sheet accordingly (Disadvantage/Advantage, Exhaustion effects etc.) This has been players' request for years.

Also, would be very useful to have the option to see other PCs' (dynamic) hit points when clicking on the campaign name on the digital character sheet. (Where we can see the names of the PCs) After all, our characters can see how tired/wounded other PCs are without asking them...  The DM already has dynamic HP using the Encounter combat tracker. This could be very useful to extend this to players on their digital sheet.