[Rah]

I have seen that rage critical and spell critical chance have been implemented in the game which is a very good move.

But are the special attacks of units influenced by a critical hit and the more important question, are items damage bonus affecting the special attacks (like +1 poison damage or +1 fire damage)?

IN Legend and AP some special attacks have been affected by the items bonus, for some reason - most were not. None of them could score a critical.
I used a mod that turned on the critical for special attacks because most of them were less than 50% more powerful than the base attack and with a high critical chance at the end of the game, with Gaudi giving double critical vs undead and demons, it was just stupid to use most of the special attacks.

One way of implementing items damage bonus could be to increase only the attacks from the same damage group, i.e. +1 poison damage is added only to base poison attacks, +1 fire damage only to base fire attacks etc. AND depending of the item type the bonus goes either to melee or ranged base attacks - a bow should not give a melee bonus.