They were second ruckmen who are important types for any modern team to achieve success because, no matter how great, no ruckman can go all match without a chop-out. (Even the likes of Gawn - witness the Grundy recruitment; failed because Grundy is also a No.1 ruck but then Deez had to throw JVR et al others on the ball).
So, the ability of a No.2 ruck to go forward and be an effective scoring option is vital for a player that is not good or strong enough to stand up to the No.1 rucks.
That's why I wanted us to keep Chol; almost the ideal 2nd ruck because quite dangerous up forward. He cops criticism from posters who expect him to be great as a ruckman; that's not his strength though. RFC couldn't make the hard decision to work hard to keep him and trade out CCJ.
Cost us both players. Chol still going well; maybe better than ever at the Dorks. Meanwhile, we are waiting forever for a spindly beanstalk type to ever be able to stand up and give Nank genuine support - as a chop-out or forward.