i think that -no matter what- a lot of people will stop playing in classic when you open the H5 server. You cant avoid that. even people that want to play classic like me will be tempted to start in a new server. I dont like the idea of Η5 because it is an old client if you compare it with the classic server that have the most recent graphics and most recent improvements. Η5 servers dont even have grass on gludio and you cant revert the mouse weel for the zoom of the screen. NCsoft is not updating Η5 servers but they update classic so h5 is a newer chronicle with an older client
personally i think that you have to protect classic project and bring more people and not devide its community