Insert Last Name during E-newsletter subscribe?

Was wondering how to do this. Also other questions/feedback

2. How do I change the text that says Your Email, Your Name? If this isn't possible, please add the feature to do so in the settings page of the plugin. I will need to have a full name (first and last) and email address when I export the subscription list to a .csv file.

3. Add the option to have label text in the input field as a description (like in the email field to say, Please enter your email)

4. Is it possible to have a better organization when exporting to an excel file? Separate field columns for each value, email, first name, last name, Group, (and whatever column) instead of everything in one column separated by ";" or ","