Beginner and intermediate players will just play slightly better if they properly make use of it. If you do not want to play better then simply do not use it. On the highest level it does not really matter whether you have the plug-in or not and I'm fairly confident that better players would not mind having better opponents.
On the admin side, the plug-in should be properly introduced to non-forum users, added to the website download section and be made official and later added via a patch and added to a new installer version.
Lastly, the plug-in is more of a training assistant than a hack, and it will enable players (regardless of settings) to gain a better understanding of the game's mechanics, gain more focus on more complex elements of the game, and improve the overall quality of play. In any case... people never come to a consensus so it is up to the admins to discuss with the community, and decide. In the end, people will get used to whatever happens.