This is more of a suggestion, because it seems some industry sectors, such as mine, need a signature to appear on each page. Contractors still use paper plans to take at projects and the digital signature, with whatever features we want it to have, should appear on every page, because of trust and regulation issues.
Although I'll push for the use of the Stamp feature, it will still look odd and, for us, unofficial.
The signature feature should provide for the signature "image" to appear, at least, on the same position in each page. I think this shouldn't be difficult from a software standpoint, certainly not for the programmers of Adobe.
This way, for organizations that need it, they can regulate for a clean space on the same position to be provided in each of the design pages.