I am using 5e sheet by Roll20 for quite a time now, and taking campaings to a higher level, which mean more large monster description. First of all, I use separate browser window s for monster sheet (in a second monitor) so I dont miss the action on board while I get information quick&easy. I need to said that the actual state of the monsters sheet are difficult to go through. And could be improve with a little screen organization. I´m a front end developer, so I know it could be done maybe easily, but I dont know the real code for this component, so I just go to tell my ideas, and you check if are good or not, and if they could be implement or not. Check this example: and below of that is the spell list You could set monster abilities, reactions, legendary actions and actions in the first two columns and use the third one for spells. Spells is other area which can be improve. Now you separate the list in 3 columns, first cantrips, 1st level, 2nd level, second column, for 3,4 and 5th level spells, and 3 column for 6, 7, 8, and 9th spells level list. Characters and monster both have limited cantrip, a lot of level 1, 2 and 3rd level spells, and few of the others. So, you can just use two columns, one for cantrip, 1, 2 and 3rd, and other for the rest. Check the sample of what I said:
