I really enjoy RDF, but I understand the reasons behind the decision to disable it. I don't mind walking to dungeons, however, I really don't like spamming LFG/LFM on global. Global is full of spam, guild recruitment, trade, LFG/LFM, it's really hard to follow.
Before RDF was introduced, there was a LFG tool that allowed anyone to select a role and the dungeon they want to participate in, and anyone who wanted to form a group could see a list of players interested in a specific dungeon.
I would love to have an alternative to RDF that doesn't involve spamming global.
I have some suggestions and I would like to hear you opinion on this:
1. Enable RDF to find a group but not teleport people to the dungeon. But this may be hard to implement...
2. Promote a separate LFG channel, to free global from spam.
3. Leave RDF disabled by default, but make an option on the website to enable it for your account. This way it will only be used by those few who really want it.
If you don't like these suggestions please contribute new ones or maybe there is a simpler solution to this problem that I am not seeing. So please tell me.

