It is very important to have a very good and steady opening.And for that to happen you need to concentrate on first move.Like this

It is wise not to start  with a pawn moving one square.

When a pawn has to be moved it is wise to move it two squares.

Analyzing the possible legal first moves.

 

a4-This one is one of the weakest openings.

This gives the pawn control over b5 square and the rook over squres a2 and a3.This can be avoided.

Move Points-3(2 for the rook and 1 for the pawn.

 

 

 

 

b4-It

is a good move as it gives the bishop contol ove two squares b2 and a3.Pawns get control over a5 and c5.

Move Points-4

 

 

 

 

 

 

The other openings will be discussed in The Battle Begins-Part II

I think the only thing I truly agree with in this post is that you've given b4 more 'Move Points' than a4.

Opening moves can't be ranked by such a system- the game is too complex for that. While it does tell us one thing about the move, there are others to consider- for example, 1. a4 does not stake a claim in the important central squares. You say it has opened up the rook, but 1... e5 refutes this quite nicely.