Conditional Features

Would love to see the ability to make features or fields conditional in more places.

For Example:

• Users can delete payment profiles IF they have more than one in the system.
• Users pay $25 for the first tournament event they register for, but IF they are already registered for one, any additional tournament event is only $10.
• Show different prices, or custom fields based on the input in another custom field - so if someone selected VIP in the "Registration Level" field they would be charged $75 instead of $60 if they were to choose Standard in the "Registration Level" field.  Or only show the "Partner Name" custom field if someone selected "Partner" in the "Partner or Solo" field.

Mainly just having the capability to make certain features/options/fields conditional to have more options/customization available for events and what not.