Setup fields to calculate values from other fields. This code would be saved as a default value for the form.
Example: [calc 232*234] (232 and 234 are field ids)

Also include an option to "Save this search"

Would you like your uploads to go to a directory other than the WordPress "uploads"?

For non-profits, PayPal supports recurring donations through the "Subscriptions" feature. Non-profits use this same feature for more obvious "Subscriptions" such as membership dues.

I vote for FP to support PayPal Subscriptions in two ways:

1. Subscriptions preset within the PayPal client account
2. Custom subscriptions (i.e. recurring donations) where the term, frequency, and amount can all be set by the end users when completing the form

Capture data on the other page by sending all data to another URL

I would like to see a friendly scripting language implemented into Formidable that would allow better data manipulation.

Similar to: http://www.zoho.com/creator/overview/deluge-script.html

Add a way to create a single custom display that pulls from multiple forms.

if this is enabled for a form, the entries could have some statuses like unread/read/resolved/approved and contain a notes area

This would allow sites that have lots of forms to be able to organise them in a logical manner!

jquery character or word counter tied to the input fields

Example: [editlink fields="1234,5678,890"]
Example: [formidable id=x fields="1234,5678,890"]

The ability to add a confirmation field to another field, for instance an e-mail confirmation field to ensure that the user enters the correct e-mail.

Allow users to select field keys, id's or specific data from the wordpress database to use as a form variable. Variables can be used in conditional fields as well as custom displays. This variable can be set as form specific or used over multiple forms.

Add Groups of fields together ie first and last name, full address...

Clickable images make forms & polls look cool

allow for number of nights calculation based on a checkin and a checkout date.
also allow for a logic check that checkout date is after checkin

After a form is submitted, the success page would display the poll/survey results.

Add the ability to select the exported fields for csv.
Save the exportation rule.
Select one of the exportation rules in a dropdown menu just next to the download CSV button...