What changes would you make to existing tools?

I would like to see a tool effectively clean the inside of a double pane window that is difficult to take out for some reason or storms.

I was frustrated the other day because one of the housekeepers on an estate I am working at had to take off the paint in the outside of the window and pull a 30 pound glass window out on a ladder 2 stories up. I cleaned those panes but I wish I could get the outside of the most inside window more effectively.

Also maybe a better way to apply pressure to a bronze wool or steel wool when scrubbing windows with a WFP.