AA Classic began using the 3.0 version, with locked content and gradual unlocks. This version was before changes to the trade system and to gearing.
AA Classic has higher labor regeneration, higher labor cap and free patron among many other changes to the game, making the experience fair to all players.
Alt accounts are not allowed, RMT is also strictly monitored and punished. Any cheating/exploiting results in permanent account termination, with no exceptions. The game is only fun if it is fair.
AA Classic is updated frequently with new custom patches to keep content fresh and interesting. Custom content stays true to the original experience that all of us love. Classic will never go above version 3.0 to avoid reworks like the Trade System changes.