Some talk or requests pages are necessarily very big. Apart from the absurd [[WP:AN/I]], the usual solution is to subpage them. LQT, to be really useful, should allow to easily manage such pages.
Beside bug 25054 and especially until bug 20542 has not been fixed, it would be useful to be able to show only the TOC of bigger talk/requests pages, to avoid loading of full text still allowing to quickly see all recent threads.
An example of system that should be replaced by this one is it.wiki's village pump ([[it:Wikipedia:Bar]]), where every discussion has its subpage and the main page contains only an index of recent discussions, updated by bot ([[it:Template:Bar3/titoli/0]] and so on: several thousands of edits per year which could be avoided by LQT with an automatic, configurable index).
This could be also a sort of workaround for bug 21690 and bug 25054 (if the index dimension could be set by date and not only number of threads).
If you was able to tranclude the TOC of other talks, this would also reduce the importance of bug 20542.