An option to edit the level in run time (Play mode on) in editor

Placing few things in place for a level is always a pain. especially the scale, rotation and position that changes often. so for a long time i thought it would be nice to be able to edit the transform or other script data at run time( in play mode) and have a option to freeze it, so when it comes back from play mode it would have the data set in run time!!

i think that doesnt take much of a effort to implement. but for user it would be really helpful to work with in the editor!