I don’t like the new Gnome either. I had been enjoying Gnome but after 3 was released I swapped back to Xfce.
However, one app which is inexplicably hardcoded to work with Nautilus is Dropbox.
I followed a quick guide here to get it working with Thunar but it kept giving me an error:
Thunar: Unknown option --no-desktop
Taking a look at the suggested wrapper script we see:
exec thunar $@
It’s passing thunar multiple options. So, a quick bit of trial and error gives us:
exec thunar $2