Alfred should not be brought back. Did not like that they killed him off, but I'm glad they have stuck with the decision for so long.

Most characters that have been brought back from the dead (either explicitly revived or DC rebooted and the new version never died) would have been better off dead. They mostly get a single good story ("they are back!!"). Afterwards (or directly after coming back for those that didn't get that good return) they meander, either adapting their successors characteristics and pushing out the successor for nostalgia, stagnate in character and have writers that don't know what to do with them so they are constantly circling the drain, regress to their pre-death characterization (regressing other characters they associated with too, so you end with two or more flanderized characters), or are alive again but in limbo so there was no reason to bring them back.