You should have a look at syscoin if you like Gulden. In 2019 they reduced their block reward and added a 5% reward reduction annually.
Master nodes get 75% of the reward and miners 25%. They have a governance system where longer term masternodes get rewarded more.

I sold my Gulden for syscoin in 2020 and the coin has performed well in comparison. Gulden is still a good coin but without a reward reduction in the future it left me hesitant to continue on.