Note that both Elcenia and HTHT have their origins in a collaboration, although Elcenia's was longer-lived. HTHT's co-creator (who is very invested, in general, in straight-up mahou shoujo tropes) was no longer on board by the time I started publishing, but I didn't feel like I was free to arbitrarily discard bits of the original concept. But I think it's mostly a matter of my having improved as a storyteller, as you say - that, and I'm a lazy, amateur artist, which makes webcomicking an awkward juggling act between leaning on the writing and failing at "show don't tell", and leaning on the art and having everything be incomprehensible and take forever to draw. At this point I'm not having fun with it, but I feel obliged to finish it (in part on the urging of my erstwhile co-creator). That's not exactly inspiring me to new heights of quality.
Luminosity is sort of collaborative in the sense that I'm using a borrowed world, albeit with no direct participation from Meyer herself, but I honestly do not think worldbuilding is my weakness, nor character creation (Radiance in particular mostly runs on characters who are original or so far diverged from their canon origins that they might as well be).
Update: Discussion has moved on to a new thread.
The load more comments links are getting annoying (at least if you're not logged in), so it's time for a new Harry Potter and the Methods of Rationality discussion thread. We're also approaching the traditional 500-comment mark, but I think that hidden comments provide more appropriate joints to carve these threads at. So as of chapter 67, this is the place to share your thoughts about Eliezer Yudkowsky's Harry Potter fanfic.
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: one, two, three, four, five, six. The fanfiction.net author page is the central author-controlled HPMOR clearinghouse with links to the RSS feed, pdf version, TV Tropes pages, fan art, and more, and AdeleneDawner has kept an archive of Author's Notes.
As a reminder, it's often useful to start your comment by indicating which chapter you are commenting on.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: