I agree opening up GEDMatches to the general genealogical public is such a great idea.
As has been pointed out gedmatches clearly has two uses for wikitree.
The first for wikitree members, to add individuals without increasing the number of duplicate on wikitree and the second as a means of none wikitree members just doing an easy search to find out what information matches on their family tree with wiki tree (and hopefully joining and adding their research to the wikitree).
With this in mind could the gedmatches have it’s own front web page in addition to the one we use.
That would purely allow researchers to see what matches there was and then entice them to look deeper into wikitree.
Only the current feedback I’m getting from outside researchers is wikitree looks at first sight complicated, and this can be a bit off putting.