Hi. I think it will be useful to create such a feature. It will be useful to create hooks without runtime changes.
A situation: Android's and GNU/Linux's elf structure is the same. Android's libraries can be loaded by glibc's linker, there is a project called fake_libc that allows us to load Android libraries in glibc based program. But Android and GNU/Linux libc implementations are not fully compatible. Libhybris uses runtime hooks. I think we will be able to get rid of hooks using .dynsym and/or .symtab patching.