It would be beneficial if the read aloud feature have some options.

You should add custom reading speed option from 0.5 to 2.0. Currently only 4 options are there and no custom ones.

Second one is that collaborate with the system or Google's speech system and make more voices available or just make new AI voices for reading aloud.

I would be very good for students and workers who use this feature to read pdfs. (Including me too). I hope you would consider it soon.