Reflektorfalke, i know that you mean well and Your idea isn't bad at all, but I'm afraid that it can lead to even more info fragmentation. Now, one can find info on Wiki, on "[Announce]xyq" topic, and probably on few topics related to same things but called about "problems with xyq".
For me, only one rationale solution is more discipline about keeping wiki up to date, then responding to questions already covered in wiki by only linking to wiki. Maybe this seems little harsh, but i think that this will both propagate wiki at all + teach offenders to search there first. also, information will be in one place... Forum = discussions, i.e tracking down problems and making conclusions. when we got conclusion, data goes to wiki. If ever conclusion change due to new discoveries, we can update wiki
I know that now wiki is little messed up, but i can't agree that it is shitmeat. I found very valuable info there - at least half of things i learned, another half is from forum I'm patient, so it was no problem for me to triple-check every aspect between wiki data / announce data / other topics data, but i must agree, it all would be faster if found just in one place (then, discussion about actual problems in forum).
Maybe it is even good idea to clear parts of the topic that were already concluded and summarized on wiki? You know, after 14-15 pages of discussion most of the times we already have one or two conclusions - this can be moved to wiki, then related posts on topic deleted. I know that this could be much work for moderators - maybe popular topics, like kernel-power and similiar, should have ''topic maintainers''? Like pali for kernel-power v47, or package maintainer when we talk about [announce]... anyway, this is just idea. Keeping wiki up to date is most important part in my opinion.