Being able to acces the LFG list everywhere at anytime allow players to find a group faster than before.
Meaning, they’ll be less patient & more demanding because they can easily check if an another group is ready no matter where they are.
In Vanilla, because the research was harder, no matter if you were a good guy or an impatient one, you were helping the newcomers, not leaving after some wipe because YOU were unsure if you could find a new group really fast.
Leaving had in impact on your reputation and it was a risk to impact YOUR gameplay and YOUR time. It’s was forcing players to behave better, for their own sake.
The community aspect of Vanilla come from things like this. It was a fragile balance. Don’t break it.