Multi Select Pricing Field

Hey. I am using WooCommerce in combination with Gravity Forms. Love it. I am just wondering, why is it that I can not have a multi select pricing field? I mean, isn't the code already there?

Has anyone explored a way to make this happen?

Thanks.

It's a pool cue website.

I am using WooCommerce with the plugin http://www.woothemes.com/extension/gravityforms-product-addons/ in combination with Gravity Forms.

My form setup looks like:

(all pricing fields)

Product:
- Type: Hidden
- Price: $0

Option (weight):
- Type: Drop Down
- 18oz
- 19oz
- 20oz
- 21oz

Option (shaft):
- Type: Drop Down
- shaft 1...
- shaft 2...
- shaft 3...

--------------

The above are the required fields and my client likes to have more fields with extra add on items. See below for an example of the rest of the form...

Option (addon 1):
- Type: Drop Down
- addon
- addon
- addon

Option (addon 2):
- Type: Drop Down
- addon
- addon
- addon

Option (addon 3):
- Type: Drop Down
- addon
- addon
- addon

Option (addon 4):
- Type: Drop Down
- addon
- addon
- addon

----

Now instead of doing this and making the page super long, why not have a multi-select drop down? There is already one under Standard Fields -> Multi-Select. I can't use this though because I need it to have pricing attributes...

Here is an example of what I would want:

Option (addons):
- Type: Multi-Select
- addon 1 - 1
- addon 1 - 2
- addon 1 - 3
- addon 1 - 4
- addon 2 - 1
- addon 2 - 2
- addon 2 - 3
- addon 2 - 4
- addon 3 - 1
- addon 3 - 2
- addon 3 - 3
- addon 3 - 4
- addon 4 - 1
- addon 4 - 2
- addon 4 - 3
- addon 4 - 4

Does any of this make sense ? If not I can try to clear it up a bit