time priority (Eisenhower-matrix)

Hello the lightning add-on is great and very practice
i suggest to add the Eisenhower-matrix in a to do list and on calendar

the base is classing our task by :
A - important & urgent (red)(900-1000)
that me mus do the most soon by our self

B - important but not urgent (dark orange) (100-900)
the we must prepare to do it

C- non important but urgent (orange)(50-99)
that we can delegated to other ppl

D- non important and not urgent (yellow)(1-50)
that we can do or no

the idea is converted on many programmer, and ios, android application
and hope any one how can do it for Thunderbird or better integrated it 
on calendar

the task will have color and note for example in the same color the task 
having big number will be classed before
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The idea will be more simplified for this first release

** On task just changing the text on priolrity booton (urgent can be or 
not important and important can be or not urgent )

** but the important is on the event calandar
we only have add new box called : time priority (like for email) with 4 
choice (http://www.eisenhower.me/todos ) :
A Urgent - Important (red)
B non U - I
C U - non I
D non U- non I (yellow)

this box have to be under the title and above the category -->
which me that we have to create a box before the place box and on the 
same line

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plz you have to manage other box ( add new event) that need to be on 
same line  like the 2 last one( the repeat and the remmeber ) it is more 
practice to be on the same line

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on the second step we will see if we can integrate task to do with 
calendar !

there is 3 big idea so plz if any one interested to do this contact me 
and we will think more to how to improve this nice product