Congratulations, you have done a great job, there is nothing to add and there is nothing double there.
Rheinland has enough free space for new faction especially as compared with the amount of factions in other systems. Lets take a look at Rheinland unlowfulls; Hessians, Unioners, LWB, Bundschuh and unlawfulls which are operating in Rheinland; Corsairs, Outcasts, BD, The Wilde, Coalition and many others occasionally invade Rheinland space. Furthermore, it must not be forgotten that RM has permanent war with LN. Because of all that I think that WRF is more then wellcome. Btw they have already bring a kind of balance. They are present and they act in Rheinland for some time. The difference is that they will soon begin to work as official.
Personally, looking forward to that.