Question about Sample content in 8 version

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Hi. i am creating new theme for 8 version.
Using Migration tool module i created xml file.
Trying to install new theme with content.xml file on fresh version, but it cannot found my content.xml file. But if i try to import this file using migration tool - works fine.

Question:
is it okay to required users to install Migration tool and import content file using it?
what will say people who will check my theme before to add my theme to store?

biaprom