Gulden will go down as one of the greatest marketing tragedies in crypto history. The development team is super talented but no one is taking notice, the right people with money never bought into this crypto.
There is no doubt some other coin could just copy Gulden and make a huge success with all the tech behind this crypto.
It is a tragedy for a lot of reasons,,, including the ones you mentioned, but these are not necessary the unique points of Gulden. I know many other tokens with talent and vision and nobody to pick them up.
Just look at what happened with the way they went to court and there is the biggest weakness of this coin, how it did not manage to become decentralized. Let us hope they learn.