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What i am aiming for, is to break down the "decision-process" into small pieces. And then try to estimate of how much importance every point is. And as you see i haven´t thought it true very deep yet, but with some brainstorming here we might end up with something valueful.

I want to see the whole decision-process as a blueprint or puzzle. And maybe numbers isn´t the way to this

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You're not going to like this answer, but the way to do this is the same way every seasoned pro does it. Play real poker. Just learn to process all these bits of info everytime, for every hand. That's the only way. It comes with experience.

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It comes with experience and true knowledge, what i mean with true knowledge is that experience doesn´t allways make you better in the decision-process. You´ll have to analyze things things as we do right now, with discussion and reading, Along with practical knowledge and experince of course.

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There is one point that you're sort of making that I generally agree with you on: the idea that some sort of routine for remembering to look at all the things you should be looking at each hand could be good for avoiding lazy or incorrect play.

There are, imo, two issues here. On the first one (that most posters in this thread are talking about), systematising the synthesis of all the variables that go into a poker hand is pretty pointless, because the system has to be so big and complex that it is essentially impossible to design such a system. The good news is that you don't need to: that's what your brain is for, to evaluate all these things.

However, there is a second sense in which (imo) a system can be useful--To remind yourself to take note of all the variables in a hand while you're playing. Everyone does this anyway but it could be helpful to make it explicit if you tend to do it haphazardly or not in the same way every time. You can ask questions like Harrington has in his "Elements of a Hand" section, stuff like "what's my position" "what's the status of the tournament?" ending in "what are my cards?"

In cash games, I have implemented some questions I ask myself every time I hit the HJ seat: Is this a table I should be playing at? What's the table VPIP/PFR? Am I tired? Am I tilting? What's my table image? I found that the HJ is a good spot for that analysis, since I can play around to my blinds while I'm thinking about it and I'm not quite as active with hands as I would be in the blinds or on the button.

So, anyway, I think a system to remind you to remember to look at everything you should look at in situations like preflop, analysing the texture of the flop (does it have a pair, does it have 2 suited cards, what cards have a straight draw, is it likely to have made 2-pair for someone, etc) is a good idea, and I'd go even further and say everyone uses one, whether they think of it that way or not.

But attempting systematically to evaluate the information into a play decision by assiging weights, codifying it, etc. is essentially unworkable except perhaps in push-or-fold type situations and, even then, you have so many subjective factors (what hand ranges your opponents will be playing, how they see you, how they play different stack sizes, etc) that your results will be much better to just come with answers on the fly each time.