I strongly vote for merging these two coin types!
Yes, KMs are different, but we all know that World Coins isn't perfect.
There are many examples in the catalog when coin types with larger differences are merged:
1) Cuban centavos with lettering "PATRIA Y LIBERTAD" / "PATRIA O MUERTE":
https://en.numista.com/catalogue/pieces1017.html
2) Various Cyprus sents with different design, like this:
https://en.numista.com/catalogue/pieces1951.html
3) Czech 20 Haleru:
https://en.numista.com/catalogue/pieces2151.html

There are much more examples.
Yes, these French light type and heavy type coins have differences. But are they really so different, if I have to take a magnifying glass to find out?
P.S. I also vote for merging these coin subtypes:
1) Finland Euro cents with and without mintmarks.
2) Ukraine subtypes of 10, 25, 50 kopiyoks, 1 hryvnya.
For now I've marked these types as unwanted.
I urge the Numista community to express its opinion.