When you use the PROP tool on an area of multiple pixels of the same element the properties of all pixels are changed. I think it would be very useful if the PROP tool had a checkbox to edit only the pixel you clicked on even if there are other pixels of the same element around. For example I am currently working on a save which has multiple pixels of cray next to each other and I want to set different tmp values for them without having to seperate all the pixels, edit the tmp and paste them together later.
And speaking of changing properties with the PROP tool I suggest that the PROP tool remembers the property you changed previously so if you have to change many WIFI channels you don't have to select the temp property every time because the tool remembers that. This saves a lot of time!
More suggestions are very welcome.