There is a very elaborated system of close votes, where irrelevant question can be closed real quick just by users with enough rep, without the need to bother a moderator. Migration on the other hand is not so easy.
Drop a comment to the user: "hey, this belongs to GIS.SE". This almost always results in immediate cross-posting, which we don't want.
Close. The question can get closed real quick, but it won't get migrated right away, if at all. The question will be closed for considerable amout of time and the user will be tempted to cross-post. Let alone there is no proper close reason for GIS.SE and other sites.
Flag - other (needs ♦ moderator attention). The problem is involved in the name itself - needs moderator attention. The system is not set up for other higher rep users to speed up the process. It will be slow and thus increase the time the question is at the wrong site, increasing the risk of cross-posting.
So, unlike the great closing system, where moderator is just a human exception handler, migration doesn't seem that smooth.
Shall this process be tuned somehow in the sense of moderation theory?
I don't have a particular proposal how to do that, so just throwing several thoughts:
- Is moderator attention needed for migration? Or can be based only on high rep users voting? There are suggestions it's needed and also that even moderators of target site might have to be involved, but this could be matter to further discussion. It could also be the high rep users on the target site :-)
- Higher rep users should be more collaborating and participating in this in the sense of moderation theory and prepare the migration cases on the silver plate for moderator, if his attention is needed (see the point above). Currently, users are lead to both closing and flagging, there is no clear workflow, no place in review items - both for the high rep user and maybe for mods too(?), etc.
- Don't have clear idea how this would work, but for example, high rep users could vote for migration to any SE site. The significant difference between this and voting to close is that there would be no time gap when the question is closed but not migrated yet, thus, motivating for cross-post. This could be e.g. implemented within current system where question closed for "belongs on another site" reason would not be actually closed but be waiting for moderator (or high rep users on the target site, see above) to migrate it.
So please, come up with your ideas. I am not proposing anything particular because I know these things are extremely hard to tune well. But thanks to great SE network we already know that tuning it well is possible :-)