The only important thing that is needed other than averages is the standard deviation (often skipped).
Valid point, but the Ent was a math professer, so I guess that was taken care off

I'm not convinced that these details alone would be sufficient to make appropriate points values though- there are plenty of other considerations, like special rules, average Ld of the controlling army, total break point of the controlling army and role of the monster in the army.
Correct ! and having been part of the proces of reviewing "minor" changes in the selectors AND introducing new armies to the game the one thing that sticks out most is
which Role(s) should it forfill and what are the alternative options in the list
closely followed by
Ohhh, but is it sooooooo cute.....
(and thruth be told, some GW participants had models made that where "sooo cute" and then dropped it in the designers/playtestteam's lap to "fit them in"
Honnestly, altough I like me Big Brutes, how many battles in the Warhammer World would actualy see a pletoria of monsters fielded on either side ??
We could do it the "epic" way, and have games with loads of monsters where the infantry basicly is a doormat

(actualy, it would not be TOO hard to do that ...........)