The "Show full games" filter is a relic of old times when the lobby had different characteristics:
- Kicking / banning players was not impossible, so one had to ask trolls friendly to stop instead of being able to take care oneself.
- The client limit was 8, so if the server was full and one of the players was not welcome, the other player people waited for could not join. Now 40 clients can join.
- Observing wasn't a thing, due to the client limit and broke observer implementation. Nowadays a significant portion of the games are joined by late observers and for many if not most players, the first action after logging in is to uncheck that filter to see all games.
Furthermore the "full games" filter still shows running games where some players left,
while the intention was to only show games that are waiting in the gamesetup for more players to become assigned.
Therefore proposing to change the "Show Full Games" filter to "Filter Open Games" and have that disabled by default.
The use case of that filter is now to only list games that are waiting for players.