Testing builds are out, moved the code to the testing branch. Dev will be unstable again soon. Unsticking this thread.
Tested the compressed key script on the mainnet. RBF too. So far so good.
Would making it easier in one way, yet making it harder feature to discover and understand in others, achieve less abuse of the RBF feature in practice?
Usually, honest users don't try as hard to get things to work as malevolent ones. You are better off making the thing easy to use in the end. But UX is a pain to work on, so in due time.