'Native' rss integration in phpBB would be nice of course (whenever it might come about) - but you've done such a thorough implementation so far... well, we'll have to see how whatever's to be might compare.
Meanwhile, I am still playing with 'tweaking' some other styles to support your mod, and have a few more suggestions & questions >g<... So far I've mostly been playing with the "Serenity Purple" style, so the following based on that :
- - For a "more generic guide / hints" for tweaking styles - the line you suggest to search for in overall_header.html to insert the Smartfeed link after doesn't work so well in other styles; instead, searching for U_FAQ and inserting *before* that line seems a better way to go. The actual line to be inserted is a bit different too, but that's up to the "adventurous modder" to sort out (as that's "non-generic").
- In smartfeed_url_body.html - is there any particular reason you went with the <dl>/<dt>/<dd>s that you did rather than <table>/<tr>/<td>s that I might be missing ? In some styles your approach ends up with everything in one left-aligned column, whereas a "<table>-based" solution seems to be working across more styles better so far.
- Also in smartfeed_url_body.html - the <fieldset>s don't seem to be "doing anything" (that I can see ?) in the proSilver style, though they do result in some ugly-ish boxes in other styles - so probably just as well to leave those out ? (Though I admit I haven't played with the subSilver style much yet - maybe they're more "useful" there ?)
Be well & enjoy !