Fossils With Random Amounts of Coal/Diamonds

Instead of having a 10% ratio of diamonds/coal to the 90% ratio of bone blocks per fossil structure.  A new feature that could be implemented is to have a completely random chance at having the bone blocks be replaced by diamonds/coal; like for example, a 1/10 chance of replacing each bone block with diamonds/coal like an end portal frame generating with eyes of ender, where the fossil could be completely made out of diamond if enough rng took place. This would create a very interesting new "hunt" for people to find fossils that have the most diamonds/coal and create a real surprise when people stumble upon an area of 30+ diamond ore that was in-fact a fossil.

I hope this suggestion has been found to be interesting and I really think it will provide a new experience with fossils.