Change in Piggy plop production: You can feed up to a whole stack of crop, and Piggy will leave a trail of seed-filled plop to examine.
Could something be done along these lines for batterflies?
Also, not sure if this is possible but it would be neat to have guano that you've fed the batterfly to get be locked to you for 60 seconds (as herbs in community gardens are locked to the planter for 60 seconds after becoming available for harvest). I haven't had any problems about this myself but I can foresee some later on when the game gets more people coming in at the same time.