Populating Dropdown field values based on the value in another Dropdown field

This is still possible with current version of GF at the moment but its sort of a pain to do. Basically, I have two dropdown boxes and I want to have different values in the 2nd dropdown box based on the selection in the 1st dropdown box. For now what I did is I created a bunch of dropdown boxes and made it only visible if the value of the first box is equal to specific value, the problem is I had to create about 60 different dropdown boxes because there are 60 different values in the first box. In addition, I will have to create CSS for every individual input field because I'm using 3 column layout and need to customize CSS in order for the fields to align properly. So adding conditional logic that will apply to field values instead of just whole fields would be a great addition.

This seems to be limitation for form builders in Wordpress, Drupal, Joomla, DotnetNuke and more. It is very frustrating. If Gravity Forms can add this as a feature or at least provide a good tutorial/example on how to do this from start to finish, I reckon their sales would skyrocket.

This would be the killer feature - I need this yesterday!