Hi.
I would personally not change to a different platform soon.
For most indie dev there actually doesn't change much with the new pricing.
you need to reach a revenue of $200.000 (in a 12 month timespan) or reach 200.000 installs.
Our game Dark-Light has a lifetime units on around 25k (on steam) so total probably around 30k
our revenue is around $200.000 but in a time span of almost 3 years.
So in our case we would still not have to pay anything to Unity.
I do think their "Installs" is very unclear to me and for many others (as several youtubers posted)
And its good that people raise their voices about it.
now for Playmaker, it would probably be possible to build a Playmaker version for Godot, but would probably take at least a year to achieve as its a completely different game engine.
Porting project from unity to Godot would probably not be possible.
Since there is not store (yet) it will probably also be hard to finance it.
But I am not a hardcore programmer, so I might be wrong about any of this