Well a few things I need to point out from both perspectives as a long time player and ex staff
1. HW does not limit anyone on what they want to do, it is entirely down to the person making it (I.e a Gani Artist making 2 quests indipendantly) aswell as I have witnessed the management let everyone on the staff team have their own creative freedom and learn new skills.
2. You understand Graal is someone's business, it makes money. What has repeatedly made a lot of money on a regular basis year in and out are HOLIDAY ITEMS. This is why they are such a priority, and when a team of volunteers gives it their all to make a good holiday event + items and all new content it is understandably tiring and motivation to create more is very difficult.
The reason we all loved Alpho is because he had the time, dedication and talent to create wonderful things in the time he had, I can promise you there are not many people who will create the things he did just for the pure fun of it with that level of graal development knowledge.
3. The population of talented delevopers & scripters about. Pretty self-explanatory, there aren't many. And the ones I do know of and respect are already occupied on projects elsewhere. This makes it very hard for these people to fix or create things like the crafting system and get support for their issues.
As a player you will always see the wrong in the game, yet if you decide to be optimistic about it you will realise why you fell in love with it in the first place.