Hi condorito 
Thanks for your suggestion!
In my case, the image upload limitation will be tied to a paid package and a specific listing category. HivePress was supposed to implement this feature, but it hasn’t been developed yet.
Your workaround with jQuery is interesting, but since the limitation depends on the selected package and category, I would need a more dynamic and integrated approach. Hopefully, HivePress will provide an official solution soon!
Thanks again for your input!