Actually we do listen, but in this case less then 1% of the userbase requested it, most of those were Kore users who requested it for Firebird.
A low request rate doesn't necessarily mean that a lot of people don't want this feature.
I would submit that a sizeable portion of the remaining 99% simply switch to another softsynth when they are looking to make something from presets. Personally, when I think about putting something together with presets, Gladiator2 is the last synth on my list because of the lack of a usable preset system. Its lack of simple incorporation of 3rd-party presets also steers me away from buying 3rd-party presets for Gladiator2, even though I have purchased many for Alchemy, Absynth, Twin2 and others.
The fact that a large portion of the softsynth market is moving towards incorporating a comprehensive preset system should say a lot more than the 1% of your userbase that is submitting this request. The other 99% probably just switch to another softsynth for that task.