How to linearize your cluster

[blockchainhao]

In 2.4 Jumping Ahead, why do we do:

@sipa

If \operatorname{feerate}(pot_{new}) > \operatorname{feerate}(best):

• Add (inc_{new}, exc_{new}) to W.

Don’t we already try to extend INCnew as possible as we can? why do we put it back to the W to do more iteration on it?