tslocum
Multiple Boards, Usernames and Passwords, and permission tweaking.
Are these outside of the scope of the project? Is TinyIB intended to function as a single imageboard?
I don't plan on adding any major features in the near future, this would be quite a large undertaking but not impossible. A migration tool will need to be included for those with multiple boards already.
vichan almost does all of that. you can lock every board on vichan, so you have to go to mod.php and log in in order to post. instead of trying to make tinyib into something new, utilize its strengths such as portability and ease of use. really, just a couple modernization measures would make tinyib awesome, like make it responsive so cell phones could easily read/post/navigate. TinyIB has its strength of being portable, easy to set up ect. if it looked as good as the style of 4chan, tiny ib would be bad ass.