I will consider usability from an end user perspective. This is just my end user opinion.
I expect when I see the banner that I will only have the opportunity to click on it. My rationale for this is that I saw so many banners that fake the appearance of the form. The banner looks like it has a form, but in fact it is just an image wrapped in Anchor. If you try to focus a fake text field in a banner by clicking on what looks like regular form text input, I end up clicking on the anchor that wraps one image.
So, seeing that there is enough time, I have an opinion that any banner that looks like a form is suspicious, and if I click anywhere in the banner, I wonโt be surprised if the form is a fake form.
In addition, seeing tricks in the banners enough time, I feel that all banners that have input form data (fake or not) seem to be shadow. So, I think, Marketing Wise, don't do what makes users think your business is shadowy.
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