well for now, ive modified only the first list of units on the first post (that i repute enough "sure") according to my view. But im stil dubious on other units, i dont want to spawn the SW attributo to too much units.

So i had this speculation:

well, thinking on it, i think we have assume some conventions.

First Convention:
What in Vanilla BI is called Shield-Wall, in the EB first convention is called "Packed Oplite Formation".
And lets say that this convention is intended for old-style "shield against shield" oplite units. When the fight was intended as "i push you, you push me, the first to give-up has lost the battle. (no much more tactic or manoeuvering)
According to this first convention, the first list is ok for me:

Classic hoplites
Haploi hoplites
Spartan hoplites
Chartage Cit Militia
Chartage Libian-Phoenician Spearmen (light and heavy)
Massilian Hoplitai
Camillian Triari (not polybian)

plus:

Rorari (but id like them to have the overhand animation)
Samnite Spearmen ???????? (are they supposed to fight over-hand and with the oplite influence? im not sure)
Some celtic/Germanic units according to the antisocial post


The polybian triari do not enter in the first convention, cause from what i recall, they were used even on the flanks in the final phase of the battle, to enclose the enemy. And i will assume that they not have that old-times oplite training anymore.

now we can make a second convention.
The second convention will be called "Heavy-infantry Assault/defense Formation" (it's just an example).
And it will be intended for hightly trained units, of a certain level, that are supposed to have enough skills to break compacted in to a line of enemies, breaking the enemy ranks, or whose skills can be used even for keeping a position on the defensive. (a sort of assault/defensive hight level infantry)

In this second convention could enter the Samnite Assault infantry, the Polibian triari, pedites extraordinari?
It will not enter the Celtic swordsman (Gaesatae, Baratroas etc.) cause i think "their swords were too long"???

Even the Babylonian/Assirian style spearmen could enter in this second convention (as from Watchman)

Third Convention:
We will call it: Generic Packed Anti-Cavalry Formation. (it could be special intended to bost a bit some poor anticavalry infantry, especially for non infantry faction, like Easterns and Nomads).
And in this convention it could enter the Nizag-Gund, othern eastern poor spearmen, some gallic spearmen??? (Geroas???)

Anyway i have still a lot of doubts, but at last im quite satisfacted for the first convention till now.

So, i consider good, to assume these different conventions, and different names for the Shield Walls, so it is easier to choose the units who have to have it.

hmmm...