I am writing this just to express my opinion. It is not my intent to hurt anyone's feelings or suggest that anyone is wrong.
I for one have no intension to buy an edition 6.0. I have found that games that keep changing editions are only doing that to remain relevant and to squeeze a little more money out of the gaming public. I am not saying this is wrong of them but that I will not be buying it. I know that the most common reasons given for new editions is to correct errors and fix awkward rules. However, I have to say that I haven't really witnessed the truth of that. Some basic mistakes keep finding their way into the new editions. For example, simple things like kilometers and miles conversion. Has estates or holdings gotten any better from the first rules through Lordly Domains to Book of Manor, Estate or Warlord? Debatable. The system has changed but to me it seems more like changing the ingredients without figuring out the recipe...
The thing is, I have bought everything in either hardcopy or pdf from first edition to 5.2 with a few exceptions. Don't need feast rules, book of battle 2, book of armies 2, maps, and forms. Why? I'd never use them. For example, character sheets; I use my own excel sheet during creation. Then I have found that most want a lot of the data in pencil on a character sheet that comes with the game. Most I do is paste their arms in it before printing the blanks... Just me and the people I play with...
As to the topic of this thread, if you want to do accounting, if you are playing with me, lets just look at the new system and make it work for us. Who cares if it is accurate according to some medieval model or if it is according to the rules. If it makes sense to us, and you have fun with it? Works for me.