Not sure what you mean here. You can modify any window to any size you wish. Yes, there are some things that still work better in 6.5 (less troublesome to access and modify sends, inserts, etc), but v7 is leaps and bounds more customizable in terms of appearance and setting up information you need on screen.
Im on Mac probably everything works better on PC…
Read through more threads (checking signatures) and you’ll see the grass is not necessarily greener on the other side of that fence…