@olivierlambert
I am imagining something like esxi / vsphere where I think it's their guest tool does a resize on window size change. I think I've done it with tightvnc where it can autoscale AND it can auto resize as well. Based on looking protocols like nx, spice, and tigervnc support it as well.
Understood for the copy paste, is it possible to have another button in current UI next to the copy that is paste (understanding the current UI IS changing). All this button would do is send the keystrokes to the VM either from the text in the console copy field or from the clipboard (I've fine with ctrl+v, the clipboard to the multiline window).