Transferring gameobjects between projects

First, i know this question has been askded in some forms before, and most popular (and useless) answer is to simply export a package and import it in another project. Now the problem here is, that the other project is not empty and already contains some of the dependencies, like scripts. Now when i try to export/import the package, even if including the dependency scripts, their refs are not linked (missing behaviours). There's too many to set back up manually and even if i try to do that, their serialized values are gone so it would be easier to build everything again from scratch..... ideally i'd like to work on some part of the project (dev console for example) somewhere and easily transfer it to other project.... so is there any way to do it with little work? I've seen some existing serialization plugins, but they mostly work in the play/runtime to save the game state, not to serialize in the edit mode..... any ideas here?