Many folks have complained about getting the wrong action when clicking OK. They have to move the mouse a long distance over (not) choices. Since PA is the most common bid, to would make sense to have OK just to the left of PASS. That would help to eliminate (mechanical) errors. Especially when in hurry up mode.
The options that come to mind:
1. Have an OK on both sides of the bidding pane.
2. Have the OK configurable like auto play of cards.
3. Have a keystroke (like enter) serve as OK. Those attempting full disclosure might like this.
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OK bidding button. Placement of OK button.
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