I don't see why that is necessary. What happens if a party member does not see an ally select the dash, jump action, or if a fighter decides to use action surge. I can't imagine a single instance where a plan would be ruined because someone decided to dash without anyone else noticing. Plus, you could just tell people what your doing in voice chat. And even then, when you look at your screen, you would still be able to see what actions your party members are taking on their turn based on a much more simple animation. Just like with stealth.
A perfect example of this is in the other 5e based RPG, Solasta.
