Have a check box next to the model explorer search that allows you to enable the value for the order property to be displayed in square brackets as a prefix. This would help with changing the order of items in the Model explorer. Current state I have to either do quite a bit of clicking or write the property value and instance name on a piece of paper.

Checkbox unchecked

Location A

Location B

Location C

Area A

Area B

Equipment 1

Equipment 2

Area C

Location D

When you wanted to change the order of things, you would then check the Checkbox

[1] Location A

[5] Location B

[10] Location C

[1] Area A

[2] Area B

[1] Equipment 1

[2] Equipment 2

[3] Area C

[15] Location D