I understand that you moved it to your own engine. Does the current system still works for Ren'py though? I'm not a developer and pixi'vn is too much for me...
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Hello, nqtr for renpy works, you can use it if you want.
I switched to pixi-vn because certain things aren't possible with renpy. It also gives you many more options, especially in terms of UI (you can try it yourself).
However, I completely understand that those who have been developing with renpy for a while aren't keen on switching. However, pixi-vn isn't that complicated if you use the template with ink.