No matter of using a decimal system or the roundes system, most players on tournaments I organized were asking: Hey, here is our result, what does it mean?
After talking to them, I realized, that most of them have not even heard or read about how the system is working, they think:
I give the result to the oprganizer, and the organizer is doing something very magical, which results in some point I get.
Also, that an attrition point is something negative is not always clear, at least for starters (OK, most of them are non-english players, and the word attrition is not well known in non-english speaking countries)
So, what I will do from now on is to have some very short words about the ranking system before each tournament starts, clarifying hopefully most of the questions.
In addition, the score calculation table will be posted so that everybody can have a look and come to a final result with the 4 numbers (own attrition points, own army size, opponent attrition points and opponents army size) if he wants to.
We have roughly 50 - 100 players which are very interested globally in ranking sytsems, etc (it's only a rough guess), all other are playing for fun and if the games are resulting in winning a game or a tournament, they are happy.
And I also think that many players will being annoyed if we start to change an existing (and working) system.
The decimal discussion for sure is a good one for bigger tournaments to remove the need of additional tie-breakers, for tournaments with less then 16 players I think also a non decimal system will work most of the time.
What I'm really afraid of is a decision saying to use decimal systems as standard now, and start the discussion again about how many decimals to use
- even if in this universe I lost. 
