With the nasty detail, that this is the issue that you now need on 2-3 levels someone having a good/perfect understanding of design. And having that after 5 yea

With the nasty detail, that this is the issue that you now need on 2-3 levels someone having a good/perfect understanding of design. And having that after 5 years of maintenance is a challenge. Yes, there are also other problems then but just draw ad-hoc on demand (as much as I love it) is very dangerous.