First of all a big "Thank you" for this wonderful site!
The following is an answer to your blog-entry Ten Years of Textkit – Small Reflections And A Big Road Map Ahead.
As for suggestions for a new and better Textkit I have a few:
SUGGESTIONS CONCERNING STYLE:
The list of downloadable books (Library->Greek Books and Library->Greek Books) is not exactly easy on the eyes. The title of the book and the author blur into each other. In my opinion it would make for a quicker read if the book title and the author name were formatted differently. Personally I also feel that presenting this list using some sort of list character (e.g. "-") would improve legibility.
The formatting of the section Library->Greek Books also might be somewhat improved on. This book list is divided into sub-sections (something which ought to be done for the Latin books, too, by the way). What irks me a bit here is the large spacing between the sub-section-heading and the actual entries, and the lack of any spacing between a sub-section-heading and the last entry of the previous sub-section. Using a list character would be useful here, as well (actually even more so).
The same "spacing"-problem occurs on the "Home"-page.
SUGGESTIONS CONCERNING CONTENT:
a) Recommended PDF-files
This is most certainly true. So, Textkit's job ought to shift from supplying such PDF-textbooks to offering a guide to what is out there.Unlike ten years ago, digital copies of public domain textbooks, readers and course material are now commonplace.
After re-launching my interest in Latin I discovered (by pure chance) Archive.org and only then realized just how much public domain Latin material is out there, not only on Archive.org and Google-Books but in other places as well. There is so much material available, however, that one can easily get lost. So far I have downloaded about 5 GB of textbooks, readers, and accompanying books in my search for the few ones I am actually using. Doing so and even merely quickly looking through these books took me many hours: sifting, discarding, laying aside. And there's always more to discover.
Textkit should not try to give a complete inventory of the PDF-content available on the Internet but rather a guide to the most relevant, interesting and useful ones. There are, for examples, lots of "Cornelius Nepos"-editions available on Archive.org. It took me hours to finally select one of these. A mere inventory of all PDF-content would be mere data. A list of recommended PDF-editions, now, that is information.
By the way, this PDF-content is extremely important. Smartphones are nice, but in the end learning Latin (or Greek) is about reading, and the PDF-format is quite convenient. Before restarting my Latin-learning last year I had made another attempt a few years ago. That one failed - at least in part - because I did not have enough easy reading material in Latin. Now, however, with Archive.org et al. providing public domain-material there is more than enough available even for those with a voracious appetite.
I am also missing a list of links to other resources on the Internet. Textkit is an important place for people new to Latin. Textkit should strive to make things easy for them. Easy to converse about Latin/Greek in the Forum; easy to find good material (mostly in PDF-format); and also easy to find other good resources.
Again, such a list should not try to be all-encompassing but rather selective so as not to overwhelm the tirones.
Some of these informations are probably already present in one posting or the other. But once a posting is off-screen this information is lost to most users. Also in many cases such informations are spread across various postings and threads. Collecting pointers to selected PDF-files and web-links in one point makes it easier for users.