If people find it easier to just reply on the forum with a roleplay on their own instead of reacting to the RP in-game with in-game actions and messages, then gameplay has been removed from the game.
The only roleplays I've ever posted were ones that happened in-game first. Most of the ones I've seen in the forum seem to have been posted in-game first (anything by Renodin or Dishman for example). I really think you're finding an issue with the roleplay forum that doesn't exist. That being said, I have no objection to clearer guidelines either...