I love edit field during review add-on for desktop.
It is particularly useful for me because many of my card templates are set up with 20 to 30 question answer fields. This means in order to edit a card On mobile, after hitting the edit button, I have to scroll through 20 to 30 fields to find the card that I want to edit (While also trying not to look too closely at all the fields to not mess up my review schedule):
Possible implementation: edit field option activated by three second long press on field.
This Feature was previously suggested in the following post, which is now closed. Dae responded saying he would keep an eye on demand, so this post is me throwing in my vote for the feature. Comment if this feature would be helpful to you so dae can prioritize per community demand.