Could you make it so that when a word is highlighted, the highlight gets "locked" to that word? This would be similar to the info cards.
If I have several words highlighted and then move the verse or shrink/expand the width of the verse, all of the highlights are no longer on the words and have to be adjusted again.
Also, it would be nice to be able to click a word and then click the highlight I want and have it appear on the word. Currently when I click on a highlight option it pops in at the bottom of the page and then I have to drag it to the word I want. This is not very efficient or intuitive.