I don't think they should remove Walk-Ins. People who like to do content with less players for reasons, or people who like to take league-mates on training runs still should be able to use Walk-Ins. I do think that they should be CR locked though on both drops and marks. Walk-Ins are the reason everything below T4 is a barren wasteland. It makes the game look less appealing to new players which then either quit the game or they also rush to T5 and annoy Vets with not knowing anything about their roles. Also, while I understand Vets don't want to level alts through that content... I think it's best is Vets DO level through content with their alts.... This way they can play content with new players at appropriate levels and help teach them the ins-and-outs. Walks-Ins in their current state are just creating a bad high-end community and an empty low-end community. Which both hurt a game's state of health. I strongly believe Walk-Ins not being locked by CR was the Dev's worst decision for PvE they've ever made in this game in the long run.