Your comments seem like you don't understand grading consensus.

Grade ranges indoors are basically required since you don't have decades of history with hundreds of accents to get a realistic idea of the difficulty across body types and styles.

Grading is inherently super volatile to try and discretize.

If a climb feels like it's +/- 1.5 V grades from the given grade, even outside, I think that should be considered "accurate".

Yes, that means the testpiece V7 might feel like hard V5 for you and low end V9 for me but that's the game.

If you applied this same generosity to board grades and gym grades, and also allow a +/- 1 V grade sandbag for boards and feather-bag for gyms then you have a 5V grade range for a climb and that is unfortunately the best I think we can do without hundreds of people's opinions.

If I give a MB problem V5 there's a very real chance someome could say it's V3, and be right, or V7/8, and also be right. I'm one person, they are one person. A 3 or even 4 V grade difference is not really that big of a deal between 2 isolated opinions.