Is this something I would want to do?
No,the problem is the poor factory wiring. By the time the voltage gets to the ECM it is much lower than the output voltage of the generator. One of the areas where you might find a voltage drop is the ignition switch. The only way to tell is to read voltage before and after the switch. The other problem with our cars (as it relates to voltage) is the aluminum wire that GM used. It's a very poor conductor.The way to make sure that the computer sees more voltage is to get rid of the resistance in the wiring. This is what we are doing when we hotwire the ignition and fuel pump. As TurboBuRick mentioned,you don't want to overcharge the battery it will be detrimental to it. 14.5 volts is something that a factory charging system might put out. You won't typically see voltages any higher than this because the battery won't like it for sustained periods of time.
The other thing that happens to a battery that is constantly overcharged is that the electrolyte will boil out of the cells. When a battery is fully charged the electrolyte is in the water you see when you take the tops off and look into the cells. When a battery is fully discharged,the electrolyte moves into the plates. It's the electrolytes (sulfuric acid) that keeps the water in the battery from freezing in the winter. When you see a battery that is frozen,you know that it was first discharged before the temperature dropped below freezing. I tell you this to show you how important it is to not overcharge the battery. I,as I say,the acid is in the water when the battery is fully charged,overcharging and boiling the acid out of the battery requires the replacement of the electrolyte. Re-filling with water doesn't replace the lost acid.The more times you refill with water,the more you dilute the mixture and more and more the performance of the battery suffers and the less tolerant to cold temperatures the battery is. Again it is critically important to not overcharge the battery.
In conclusion,I like to keep the generator output at 14.5 volts. This will be the same voltage that a hotwired pump will see. Buying a volt booster is not something a cheap person does. It's something a wise/informed person does. It gives you the extra voltage you need only when you need it. It's a wonderful plus that it happens to be inexpensive. Again, nothing takes the place of a volt booster.
To answer an earlier question of yours about weather or not it's just as important to have a lot of voltage at an idle as it is at WOT,the answer is no. As the combustion chamber pressure rises,it becomes more and more difficult for the spark to jump the gap of the spark plug. This is why we gap our plugs tighter when we run a lot of boost. The only other thing that we can do to help the spark jump the gap is to create more spark energy. If we supply more voltage to the primary side of an ignition coil,it developes more voltage on the secondary or output side.
When you are able to read voltage at the battery with a volt meter,set it to 14.5-14.8 volts. No higher.