We bought a Maine Coon/Cross kitten nine years ago and were looking forward to watching her grow. Unfortunately, she didn't get many MC genes - if any at all. Until about 6 months ago she was the smallest cat we've ever had, - lovable, cuddly, got the MC fur, yes, but tiny! a gust of wind would blow her over.
She has started filling out a bit, bless her, but not quite what we were hoping for.
May be next time.