Mash volumes (micromashing)

[Reg]

You may have noticed for my thermos and gallon brews that I have been using full final wort volumes of water for mashing. There has been some method in my madness... My theory was that at smaller volumes more water would be helpful in getting the whole enzymatic reaction flowing and moving around the batch of grain.

Now the question arises that I could try a 5 litre mash with a view to obtaining a 9 litre, (2 gallon), wort. Am I pushing the envelope too far? All comments, deep sarcasm and totally off topic jokes are welcome and appreciated...