Doesn't mean they'd have to charge people. It should just be free DLC then.

In your review for TW Brittania, you asked a question, but disabled comments.
The reason blood is not a standard feature in TW games, is because feauturing blood as standard would mean they would also have to change the game's PEGI rating to 18, potentially losing hundreds of thousands of sales...That's why blood is only an optional extra purchased through DLC
I hope that answers your question, even though if you'd bothered to check, it's already been answered on the TW forums about a million times over the last 14 years.