I would like faster updates as well, but to be honest it's not something I care about too much. They are doing an amazing job with the game. They're making big money, but I can't blame DC for not rushing into hiring a big team, in his place I would be scared to see how huge the project has become and having little to no clue how to manage things. But yeah, I totally understand why some people stop funding, they are making enough money for what they are doing right now.
All I care is updates being as good as the last one. I remember being mildly disappointed (although still better than most games) with some earlier updates, like Mia route being next to nothing in terms of sexual content (thankfully for me I'm 100 times more into Helen).