Why/when do you replace into games?

[Ydrasse]

I don’t think this thread’s topic has been discussed (in a thread I can find), so!

What influences you to replace in?
Do you read the slot you’re taking or go in blind?
Do you read the game in full or do you go from where you join? How do you orient yourself?
Is there a type of game you’d replace into (normals, themes, etc) if you had the option and why?

Basically, replacing into stuff is appreciated but I’m curious about the motivations, as well as how to be an impactful rep in!