It's no mystery. They took out all those features, such as animal companions and cohorts, that would give a player "two characters", which amounts to a double number of actions. This is generally a good idea, as in some cases (like druids with their animals AND summoned animals...) one player has a lot more actions/round than other players.
It's not difficult to add in minions, though. Just take a minion, and say "here, he's yours!"; I'd restrict this to non-combatants, though (of course, feel free to bring your bag-boy into combat, just don't expect him to live very long).