How about a few changes to minimum buy?

From the user side:
1 -- If an item has minimum buy (e.g. 5), customer is still allowed to place just one in cart and is then notified about min buy when they review the cart. When the customer pulls up the item's product detail page - it prefills the item purchase quantity with "1" regardless of minimum quantity value. If minimum qty > 1, can we get the cart to prefill using the minimum qty rather than just "1"?

2 -- Add code to determine if buyer is trying to change quantity to less than the minimum buy value. If this is detected, put quantity back to minimum buy value.

From the admin side:
3 -- Add minimum buy quantity to the cart "Admin Products" page? Right now, we can only get to it using the quick admin settings.