About the parachute, i'd say its simple*: Make a recessed node, and use (License, optional dependency, etc) one of the in line .625m chutes from realchutes, such that when it's installed, a textured 'cap' appears over the node, for a smooth finish. For other parts that may go atop that depending on the user, it would just clip through the cap? Not ideal, but the nice thing about KSP is using parts lego style that they never were intended for! Keep up the (very!) good work, don't worry about funks; if it takes a few days off, it'll still be well enjoyed in the mean time. *May not actually be simple.