From my understanding app-designers should make their apps compatible with the official sdk and the given gameOS. If the app runs on unjailbroken debug it has best possible compatibility and should run with most payloads. But than from my point of view there is no or only few need for this library. I am not a coder, so please correct me if I am wrong.
People with dongles that support peek&poke could use some kind of memory patcher right after boot. Haven't seen an app yet which is able to peek for the known patches and pokes them if wanted by user.