I haven't tried RocketLoader. I might look into it since it's free though.
As for directory changes, it's possible although you'll have to rebuild the HTML for the entire board as well as move all uploaded files and thumbnails to the new directory. You'll also have to change a lot of database entries like you said, but that /should/ be it. Tinyboard (and most imageboard software) don't intend for you to change the board URI anytime down the road.>>203
While you do share a bunch of valid points, I don't see PHP as /that/ bad. I definitely agree that Cloudflare is not to be relied upon as a tool to prevent intrusion or dramatically increase performance. It does help smaller websites handle an increased traffic load though, which is really handy for those using a budget VPS or shared hosting package who have content that reaches a large amount of people. From my experience, people who use Cloudflare on top of a Tinyboard site generally use it to have the static content served reliably, not to "speed up" the dynamic content served over PHP.
As for the PHP hate - legacy PHP apps have been historically badly coded, easily susceptible to attacks, and inefficient. I wouldn't blame the language, but the poor code ethics that seemed to surround it for the longest time. Node.js might have better general performance but NPM has become CPAN shit show 2.0, with a lot of inexperienced developers flooding their community with really poor code (gee, wonder what that sounds like). Call me wrong, but PHP 7 has been something long needed - forcing developers to patch vague and broken code that miraculously worked in PHP 4 and 5. Sure, we might not like it, but it's for the betterment of PHP-based software.