Org supports priorities. These are just simple tags that let you identify how important this task is to you.
* A heading ** TODO [#B] Task 1 ** TODO [#A] Task 2 ** TODO Task 3 ** TODO Task 4
Priorities hold very little meaning to org itself. Priorities can be defined with the priorities comment.
#+PRIORITIES: 1 2 3 4 5
or globally with the priorities settings in your OrgExtended settings file:
"priorites": ["A","B","C","D","E"],