I don't mind a good puzzle... But the balance between game and smutt is the never-ending battle. A battle rarely won by the smutt too.
Once it becomes too cerebral, even the finest smuttery gets overlooked hahaa.
I won't tell you how long it took me to figure out 'triplets'... My brain did not want to engage hahaa.
But... Breaking the smut up with interactivity is often a good idea... Maybe not a puzzle and just more things to do to encourage the smutt?
'drag the egg to her panties' or like the liara one to help with the birth.