I think you've done a great job with the CTPSB Achim.
The growth is amazing.

To the what you said about posts with little "quality".
Just give different value votes to the posts.
70% as you give now would be your normal, and highest vote.
Then you can go as low as 10% or even 1% if you feel the post has really bad "quality".

This account is here to help us grow, but it should not act like an automatic upvote bot account.
Constructive criticism also help us grow so if CTPSB gave a lower % vote and also left a comment explaining why, and maybe how we could improve and secure a higher vote next time that would be great.