"Given the constraints of where and how available, out of 100 who can get it, what percentage will likely ask for it? 50.1%? Is that too high of a guess?"
That is likely too high of a guess for a general crowd. While 50.1%
might be plausible for a specific rally or event, several factors
would likely pull that percentage down for the general public visiting
the D.C. office:
Political Polarization: Given the polarizing nature of the figure, a
significant portion of applicants would likely prefer the standard
"neutral" passport to avoid potential scrutiny or "political
statements" while traveling internationally.
The "Travel Hassle" Factor: Many travelers view their passport purely
as a utility. If there’s any concern that a non-standard design might
cause delays at foreign borders (even if it's official), they'll stick
to the classic version.
Historical Precedent: Commemorative items usually appeal to a subset
of "super-fans" or collectors. Most people tend to default to the
"standard" look for documents they have to keep for 10 years.
A more realistic estimate might be closer to 20% to 30%. This covers
the "enthusiast" crowd and those who want a unique souvenir, while the
majority would likely opt for the traditional blue book.
I would think the above analysis is flawed. Of the people who travel overseas and get passports, they tend to be overrepresented by college educated folks. Also can you imagine trying to travel to say Denmark or Canada (countries whose territorial integrity has been threatened), the potential of a hassle factor would be so risky that those who would don certain hats would be more reluctant to risk the travel delays. Finally, given the spiking gas prices and cratering poll numbers, a 30% guess seems impossibly high.
Prior to WW II, in Germany passports did not have pictures of their leader on them. And 1938 Germany their leader was far more popular there.
But I suppose it would be a kind of souvenir that would be memorable-- like, oh, I dunno, a face tattoo. (Personally, I would pick a face tattoo of Daffy Duck over this passport but to each their own!!)
Happy travels!