Tyranny Portrait Pack adds 20 new portraits to choose for your main character. These are only going to be cosmetic for your appearance on the party screen and will not change anything about the game. The portraits look ok, they fit with the aesthetic of the world but are nothing that great. It's an odd thing to charge for them when so many games of this style (even their own Pillars of Eternity and likely the sequel) allows you to just add images from your computer to be used as game portraits, these are also only going to effect your character since you can't create your own party like in Pillars or something like Icewind Dale. This is an odd thing for them to release months after the game came out and they are saying they have more things coming, maybe if they release some additional gameplay content I'd consider buying this to support them but there's very little reason to buy this. This seems more like the Paradox business model than Obsidian.