Cool. I'd take it one step further and that there really is not a true separation of the pillars at all and they are just a shorthand to try to categorize what the adventurers might be doing in any given scene. Indeed, a combat can feature some level of social interaction, especially against intelligent activities. Exploration can feature combat where some hostile agents need to be fought off while the party simultaneously tries to figure out a puzzle or trap. Social interaction can feature exploration... etc
Exactly, and yet, the one remaining problem that we had was that, as soon as someone said "initiative", the flow changed completely, some people changed their mode of play and some DMs and players entered some sort of mini-game.
Say more about this. I'm not really following what you feel needs to be fixed and how you apply your "action patches" (and, indeed, what these "action patches" are on a basic level).
The only thing that we are doing is that id someone says "if the diplomat draws his sword, I will cast sleep on the opposing party", when the diplomat actually draws his sword to attack, instead of just letting initiative decide who acts first with no consideration for the preparation done, we let the readied action stand. So when, in the initiative order, it's the turn of the diplomat, if he draws his sword, then the readied action comes into play, even if the guy in question had a lower initiative than the diplomat.
And that's all that it does, it's very specific, and like all readied actions, if the trigger does not occur, then the readied action goes away.
Agreed. Although a natural order of declarations can certainly evolve in a non-combat scene, albeit informally.
Evolution is possible in every direction, theoretically, since this is what would normally happen in the genre, but the formalism of combat sometimes hampers this. It's a bit the same with a chase scene, the mechanic is not exactly the same and it causes the flow to be disrupted if you do not take care.
Do you grant advantage on initiative for both the PCs and the NPCs/monsters? It's an interesting adjudication.
Yes, for both, depending on the situation, it's more a question of preparedness than anything, sometimes the monsters are way more prepared, sometimes it's the players, everyone accepts that at our tables.
I certainly wouldn't make it a habit to do so in a surprise situation, though - the mechanics for surprise already strongly favor one side. With the "surprisee" forgoing their action on their first turn, the "surpriser" now has a much better chance to get off two attacks when given advantage on initiative - this is a bit OP, in my opinion. I don't think the players at our table would appreciate it at all to see the DM grant the stealthy monster an even better chance at two (or more!) whacks at them before the surprised PC(s) can even move, let alone act. That said, on the player side, if a player (looking at you Rogue Assassin) wanted to burn an Inspiration to gain advantage on their initiative when surprising a foe, I'm all for it.
I agree, we don't do it too often, usually when it's a "group" thing actually, otherwise, and in particular the assassination thing, is more in the "readied action" territory, which does the same thing, although a bit cooler.
For example, if you are an assassin, what you would do is wait outside a door, with a readied action to fire your poisoned bolt when the target gets out of the door. That way, even if you lose the initiative, you will still get the bolt out first. But it's not going to be as good as if you actually won the initiative, since you can only fire that one bolt, you don't have a complete round. And if something else happens (for example a bodyguard comes out first), then you will probably lose your readied action.
This rewards preparedness and forward thinking on all parts, for example, if the target knows that an assassin is waiting outside the door, he can prepare to dodge and roll if he is targeted, etc. And in the example above, the assassin should have investigated the presence of a bodyguard, and maybe anticipated it, etc.