I had a quick look at the issue you mentioned and this is something much different than the checkboxes solution we've been working on here. Would you mind creating a new post to address this issue more specifically? This'll help for anyone else in the community who might run into the same issue and doing a quick search for a solution. I think an ideal Subject might be something like "remove additional spacing from hidden fields on a form" or something like that.
For the other piece, the EasyEditor GUI is a little extension I built for the [FLEX] LP Framework that applies a "roadmap" overlay into the Marketo editor experience to make it a bit easier to navigate around the page. Im sure you've noticed that it's difficult to find/select content areas in the editor when they are empty and this is just a way of being able to "see" all the different places you can edit on a page. It adds the little blue labels to each section, editable text, form and snippet container to make it a little easier on the end-user to find stuff on the page.
Here's a look at the same blank layout -- on the left is the native Marketo LP editor experience and on the right is the same experience with the EasyEditor GUI overlay turned on.
In any case -- I'll dig back into the form styling stuff to see if I can help figure out how to hide the add'l space from the hidden rows there. Feel free to tag me if you're able to put up a new thread and I'll post a solution there as soon as I've got something solid.
I've gone ahead and created a new post for the hidden field issue. It happens with both standard hidden fields and ones that are hidden because of visibility rules. I tagged you in the post. Thanks for looking at this one!
Very cool extension you've built to [FLEX] LP Framework. Also thanks for the link to Snippets in Chrome.
Again, thank you so much for you help with the page. Everyone is really stoked to have it fixed. And, I will be pulling the changes in the email opt-in section to the other forms as it looks so much better!