Currently in Fractals you have to leave and enter again to change the scale. This does waste time and has sometimes led to groups breaking up because someone loads in slower than others.
My suggestion is to make it to where you can switch Fractal scales while inside without going outside.
There is a control console where you can do this. It currently plays the cutscene again, but it could also be used to change the scale and make sense as well lore wise.
Just a small suggestion