Dear 

Did you consider to add some more information when planning route , some kind of pre-flight briefing ?
Let's say that you are planning route , when filling maybe there will be possibility to display information that for ex. on this airfield you need to arrange SLOT for arrive and there is PPR required , if handling is mandatory then you will receive contact to handling agents etc.
I know that everything is in AIP but if you will receive this info you don't need to spent time studying AIP .
I have tested your competitors RocketRoute and they have information like this.
I know that there shoul be propably one person resonsible only for that and need to check and update all this information but maybe we as a pilots can post information like this to help other pilots.

thank you