Ability to schedule online tee times and pairings with friends. That helps with international time zones and individuals that can only play during certain times.
Option button to "gimmie" putts within 1 ft. That would help speed play. Not sure I ever missed one yet.
Practice area for putting and chipping. Toughest part of the game and most inconsistent, in terms of player interface. This would help tremendously with player improvement and competitiveness.
Good luck with Beta!