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Being around the community for a little while I've noticed mods going an excellent job merging topics that fall under the exact same idea, issue etc. For these high level solution threads what if they are highlighted somehow (bold, larger font, color highlight) and or pinned to the top of the respective area in the community? This may help newer members find that topic instead of creating a new thread. Search is great and all but unless you put in the right words sometimes it will come up empty.
You may be able to take it one step further and add an additional section for common issues or what not that shows only these specific threads and links to them. Members wouldn't be allowed to make new threads in this area, just Pandora support.