The game achievement says " Ready for everything - obtain 50 ability items "which makes me assume it will only have 50 ability items. It COULD have more, but if I am ready for everything I assume I will have everything. Also, I don't see any other achievement for 100 ability items or something like that.

I counted BT3 items, it has 100 and I didn't even count the aura items, the strategy items, or even the red items.
I am in the minority, but my favorite part of the game is to customize every character with the ability items to make them as unique as possible and widen power gaps.

On a hopeful thought, maybe Sparking 0 isn't counting Attack 1, Attack 2 and Attack 3 as three separate items and that explains the low number. If that is true, it would easily be over 100 items.

I am very excited to see all the gameplay vids when the game is released and then decide if this is the game for me.