Justin_Cooperm2

I will add it to the list.

It's not related to security policy. Please see this thread: Using a Token in the Follow-Up URL setting of a form no longer working? We're aware of this issue and are going to be fixing this very soon. This broke because more stringent validation logic was added to the platform to avoid potential pr...

Sounds like Snippets are the perfect answer for you then.

We enable you to drag a block of HTML onto a "Free-form" landing page. You can also edit the HTML for any Rich-text or Snippet element on either a "Free-form" or "Guided" mode landing page. Are you trying to do something more?

Yes, comments are no longer stripped.

We now offer support for "mobile friendly" landing pages and will be rolling out a brand new landing page editor and template syntax with the May 2015 release to support fully responsive landing pages.

This will be in the May release.

There are also text tokens. You could use rich-text token from the HTML version of the email and a text token for the TEXT version of the email.Also, snippets already support this as well so that is another option.

If you use "Fieldsets" in your forms, then you can make one fieldset of rich-text areas that would be displayed if the lead's email is already known. You can make the visibility rules for the fieldset "Show if Email Address is not empty" and then display the email address in a rich-text field that w...

If you double-click an editable section, you can drag the "Image" icon from the right pane into the rich-text editor. This will bring up a picker for images that have been uploaded to the design studio.