Do you know what you want to patch in unpacked-dll? Maybe it is possible to create an inline patch. I've created some inline patches of Arma protected EXEs already. Maybe it is possible doing this with dll's too.

I've found magic jump with "he GetModuleHandleA". Then you just need to patch 1 long-jump.

Usually the program doesn't crash after setting bp on the .text-section. So if it does try to undo changes you have made with magic jump after the IAT is totally resolved. You may also try to check if dll is unpacked after it crashes, this happens with som programs. Then it is also possible to dump. Don't know what to do with the relocs but I will look what i can do to fix this problem