It is not a stable state because the “perfect” balancing point is dynamic – even a 4,000 year old game like Go still has had balance adjustments in the past twenty years.
It's actually acceptable to tweak as the game matures and people find new ways to play it. Don't think you have to get it perfect first time.
Opening Stuck Doors. 2-in-6 -> STR check with disadvantage.
While I agree that rolling for things you want them to succeed at can unecessarily stunt the narrative, when combined with the idea in this article of rolling to see how well or poorly you do it could be used to give you narrative fodder. Like this example of the door. You don'tneed to roll but rolling might give you a nice connecting moment so you'renot skipping through the adventure to the 'good' stuff not having any fibre in amongst the sugar.
When players are attempting something that you have already determined will succeed, it can happen that circumstances suggest there could be a cost to it. For example, climbing a very difficult surface. The cost could be lost time (always a precious resource when you track time with the random encounter die), broken tools, exhaustion, injury, etc. Or the inverse - even faster than expected, went up real quiet, etc.
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"Can I use Stealth to climb down the well?" "No," I said, "No, you may not. You can use a rope to climb down the well."
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The DM gives another +2 for the handsome tip and decides 18 is good enough to make a good impression.
You could also make the roll a part of the solution. i.e. if they'retryong to do something hard it might tilt the balance ratger than it being the focus.
Actually a Persuasion roll
One weakness is trying to fit everything into specific boxes. I woukd argue this isn't persuasion.
Doing something for loved ones can allay our anxiety about them
I suppose this is what I discovered. What I wasn't doing was the thing I should have been doing. Even though that thing was only touching base and not actually doing anything major it was still what I should have been doing.
See this note front he beginning of the article. and this one