nameless – Before discussing why the Rav holds that its assur, think about what all mitzvos would look like if they would be incorporated into a theme and what is the message we are sending to Hashem, that His mitzvos need a theme that He did not require of us.
Does a theme enhance the mitzvos, or does it take away from the identifying kedusha?
There is one ides of “zeh keili v’anveihu”, but that doesn’t disassociate the mitzva from its essence.
Can you imagine walking into a sukkah or a shul which is decorated with a circus theme? How about an esrog box or menorah with cartoon characters? Or a Pesach Seder with a picnic theme?
and that’s why Rav Soloveitchik said that themed m’shalach manos are assur.
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