Replace quantity field with dropdown

Hi,

I love your plugin, and woocommerce is fine, but why did they chose this type of quantity field? Every single ecommerce site on the web lets you chose quantities either with +/- increment buttons, or with a dropdown, especially when you want to force certain quantities (ie: 10 products min by increments of 10, for 10,20,30,40,60 etc)

Is there anyway i can enable a dropdown instead of the default wc field?

I tried this : http://raison.co/woocommerce-product-quantity-dropdown-default-qty/ wich in theory lets me do exactly what i want except i cannot force X increments on certain products and Y increment on other products.

I also tried to merge this simpler version of the script with your plugin : http://gerhardpotgieter.com/2013/09/09/woocommerce-product-quantity-dropdown/ but it breaks everything.

Did anyone try to achieve this before and succeeded?

Thank you

https://wordpress.org/plugins/woocommerce-incremental-product-quantities/