When FFXIV first launched I started an LS that quickly filled up to the maximum 128 slots. As there was no way to actually boot inactive people, we ended up creating a new LS and moving all active members over, and did this about 3 times in total. I can see this particularly annoying scenario happening again when ARR launches due to the influx of new players/server transfers.

This sort of interface/functionality change isn't something that everyone will be able to experience directly, but it is something that will impact most players indirectly. I hope that the DEVs will actually devote some attention to this.