How do you people feel about spells that combine Action and Bonus Action?
I don’t have a fully formed opinion on them, but I did run into an issue you describe - planning to use an ability, but using bonus action before releasing that a follow up ability requires it.
You use hotbar far more than myself so you would know better what could be done to improve it. Considering I tend to access skills through drop down menu, adding combined “full/bonus action”would make more sense to myself, but that’s also very problematic - as full/bonus action aren’t a separate resource.
I do wonder, if it would be possible to remove the streamlining - use reaction system, or make it a separate bonus action cast & attack, depending on the skill in question.
Hail of Horns for example is a bonus action spell that augments your next attack - decoupling the two could allow a more flexible action management - use bonus action in one turn, attack the following turn. As buffs require a double click with animation inbetween, it would be tedious to use, though.