I believe it's time to ask for a change to WikiTree's methodology for identifying related names tor inclusion on surname pages (and presumably also searches). Reliance on WeRelate.org for identification of variant names isn't working.
Not only does WeRelate fail to identify two-word surnames, but it doesn't log variant spellings that have the same Soundex code and are deemed "rare."
Example: WikiTree has some duplicate profiles related to alternate spellings of the surname: "Traphagen" or "Trophagen." You won't find the alternate spellings at http://www.wikitree.com/genealogy/TRAPHAGEN or http://www.wikitree.com/genealogy/TROPHAGEN. I went to http://www.werelate.org/wiki/Special:Names to add this pair of names to its database, so they would show up here. No luck. According to WeRelate: "The following rare names have the same soundex code [as Traphagen], so they will be matched automatically: trophagen." That means that WeRelate won't ever alert WikiTree to the match...
Not every WikiTree contributor looks at those surname pages, but the failure of those pages to alert contributors to alternative spellings makes it all the harder to prevent creation of duplicate profiles. Would it be possible to enable WikiTree contributors to add alternative spellings to those pages?