What trains would you add to SCR?

What trains would you add to SCR that would fit with the current operators and metro as that's confirmed?

I would like to see a Class 701 either connect or metro

Maybe a 700 on the stopping services on airlink but imo idk if this will work

Maybe 395 on express? yes I get the speed is too fast etc but pls let me stay delulu

Maybe Class 465?

Class 139 on some routes?

230/484?

What trains would you guys add/like to see?