I'm not picky because we have a two-syllable last name (I would be pickier if it was shorter or longer).
DH is 2-1-2
I'm - 2-2-2
DS1 - 2-1-2
DS2 - 2-1-2
DD - 2-2-2
It's not something I focused on when naming them, but it is something I noticed when finalizing the name for baby girl, since all of the males have the same rhythm and now the females will as well. It should be noted that none of our names are similar - we all start with different letters and have very separate names.
I have a friend whose daughter has a super long name - about 24 letters from first to last - and she's 3-2-3, but luckily goes by a short nickname :).