the number of zones is rather limited
Yes, that's what motivated my question. It's a struggle to choose alignment zones when dealing with more than one script. If they had names and were switch-offable it would be easier to test different options. And different subsets could utilise different alignment zone configurations.
blueShift is available as a custom parameter.
I can't find this, is it called something different?
I have a plan for a rather big change in how alignment zones are handled.
Look forward to seeing it!