not so much unfinished - but exposed circuitry and components are a lot more vulnerable than ones with evan a basic tape wrapping.
Spill some coke in that head container box and you've probably buggered them up for good :-)

Even a simple heat shrinkwrap would imrpove them 100%

After all the effort that's been made with the printer - it just doesn't look right to have all that exposed circuitry on critical components.