One point we talked about last time was the tax system. The tax system provides support if people move, but I don't think it will work in the case you're describing. You won't benefit if you're not changing your primary residence. So there is probably a set of questions you may want to ask about that tax measure and what would happen if things were changed.
The answer to your question is yes, moving costs are an important factor.
I believe there was a question last time: if people are going to move temporarily and if they cannot benefit from this tax measure, will that inhibit mobility? I believe the answer is yes, and I do think we had a conversation last time about that as well.