Welcome to BTT community 
As the long time Windows user, finally I shifted to MAC, but still missing some nice features.
With the help of X-Mouse Button Control, I could enforce all Adobe apps (but not only) to use the Pan tool (hand) on pressing Middle Mouse Button! That was excellent experience to have the same gesture, al over the system and all apps.
I'd like make achieve the same functionality with Better Touch Tools.
Do you have any idea how to change Middle Mouse Down into: [Left Mouse Down + Spacebar]
Please help!
I'm missing that feature very much 