I'm not sure what this means: (k)tdegraphics is IMO a 'meta package' which contains tde graphics applications, one of them beeing kuickshow, isn't it ? (in consequence, dropping the standalone application would also remove it from tdegraphics, no ?)
Not to my understanding. I never built the standalone version of kuickshow and always have built tdegraphics. I don't know that calling tdegrphics a meta package is a good description. Seems to imply "bloat" although that might not have been your intent. :) To me, tdegraphics is an important staple of the whole desktop:
kcoloredit kcolorchooser kfax xf86gammacfg kghostview kiconedit mrmlsearch kolourpaint kpdf kpovmodeler kruler ksnapshot svgdisplay printnodetest kuickshow kview kviewshell kfaxview kdvi kooka
I use kolourpaint, kpdf, ksnapshot, and kuickshow almost every day.
Of course, this could lead into a discussion about a long-time wish of mine since the KDE3 days: to modularize the whole package system. The KDE4 team finally did this. Yes, that would mean some sweat equity, but possibly that could be a reasonable R15 goal.
Darrell