Inkscape has two options - "From clipboard" and "Bend From clipboard" for the Bezier and pen tool. But it doesn't show what is in the clipboard and what is not. Also, It can't save more than one object or path. Can I request features related to the clipboard to the developers?

Yes. Guidance here: https://inkscape.org/forums/beyond/how-to-report-bugs-or-request-new-features/

Is there any video tutorial on feature request for inkscape?