Hey @mishav
I’m not sure if this is any help or the complexity it would undertake to integrate into the plugin, but I have an idea for adding a grid to Croppie. It could be an option on the element to ‘Show grid’ and it displays with a 3x3 grid.
The workaround I guess would be to use lines or an empty repeating group as an overlay 
Anyhow just a thought.
Cheers,
Luke