Once solution with many plugins or many solutions with one entity related plugins

Currently i have a D365 Plugin solution with over 20 plugins but I was wondering is it better to split these up in to smaller plugin solutions and have a several solution with maybe plugins for one entity type so you only ever work on the solution that relates to the areas you are working on. I will soon have an issue where there are multiple work streams  coding on the same environment and think it would be better to split things up .  

Thanks G