riiight. let me just spend 20 fucking clicks modifying the size or position of a sketch entity i use either for containment or to drive a toolpath instead of 1 or 2 like in any normal cad system. ABSOLUTE FUCKING GARBAGE.
For position, have you used Transform Dynamic?
As for changing size, if it's a simple shape like a circle or arc, Analyze it and then in the analyze window type in the new value that you want it to be.