A Change and a Skill for Each Healer

[Rilifane]

Hang on did you miss the skill that I proposed immediately afterwards? The instant-cast weaving spell with the proc system that adds a small amount of resource management to play with?

I didn't, but AST already deals with RNG.
And now you want to tie weaving slots to RNG aswell.

Malefic single weave slot adds a much better rhythm to the gameplay than praying that your dot regulary procs. It's not something "to play with", it's something to get frustrated over. Currently AST has guaranteed 11 single weave slots with every Malefic, while your change would add the chance with an average of 5 double weave slots.
The single weave slot has another purpose: it gives you a little time to evaluate the situation before weaving another oGCD in your next cast. Having two single weave slots during two GCDs or one double weave slot isn't the same. It adds an unneccessary level of stress and pressure to make decisions even faster.
Everytime an AST can't use the double weave slot effectively they're essentially wasting one proc.

The 1,5sec cast was a QoL change to make AST gameplay more fluid which it did and was received extremely well by the AST community. And you want to mess it up again.
Your WHM and SCH sound nice but don't give SE any ideas regarding Malefic...