I would've loved to see something fully done, as opposed to just an opening. The other thing is I'm aware of your very very early work. The cute well defined black lines fit the style when you were doing more 'chibi'. When you're doing something more mature, the thick black lines become cumbersome. I think you have a lot of potential and I'd like to see you make something you truly feel strong passion about, and develop it fully. No rush. Dates have no secret magic to them, people will enjoy them regardless.
That is definitely being worked on. I got the script done and all that, and I actually meant to have the cold opening be shown, but was sadly cut out due to time (and a bunch of failed "artsy" experimentation). Yeah, I would agree that the thicker and bolder lines would be more cumbersome for a more serious and mature series, but I meant for this to be much lighter than the past ones.
Although I would argue on your point with dates, since anniversaries and holidays tend to be important, but yeah, who cares about dates like 12/12/12. I only found it to be cool, and an interesting source of inspiration. Maybe I might fine something to do when 11/12/13 rolls around, haha!