Yes, I know it's a fixed limit, and it's 4 orbits...
I see why the rule is there, but if you are at the same table for an hour you deserve a little bit of extra respite. You get familiar with the players at a table, and now you have to buy into a new table because of a rule made to combat bumhunting aholes and ratholing sh1tbags?
Yea its annoying to see people sitting out, but that's why an incremental sit out time would be better, so people don't abuse it. Also, start with 3bb for new players to the table, building from there.
What is annoying is on tables that are not full, players can sit out for as long as they want; As long as the table does not fill up while they are away.