Garthanos
Arcadian Knight
Bloodied is a pacing mechanism which changes and swaps out tactical choices. (Does that make bloodied tactical even though it itself isn't usually a choice I think so - see below for ways it becomes a choice too)I guess it depends on what you mean by "Tactical Module." For example, the bloodied condition is not something I would have thought as part of such a module. .
On the monster side of the screen monsters get powers that renew on bloodied conditions for instance it changes there choices I have player characters with powers and even skill functions that cannot be invoked or which are significantly better when invoked against a bloodied opponent and items which temporarily bloody enemies. I have a magic item which I reflavor/tweak into a martial technique that allows my character to control his own bloodied state so he can better control when he has access his racial powers.
As far as you using it and it not being a problem... well how many enemies play differently when bloodied? I have roleplayed them since 1e differently but i do not find that being quite the same. Do you have skills that play off of it? how many racial features or feats trigger off of it etc etc. i feel it all adds up.
This isn't saying i think 5e has no tactical elements already there was an implied promise of more...is the dmg all???? is sort of a sub question.