An interesting idea but I wonder how necessary a replacement radiator screen really is? A honeycomb pattern rather than the "incorrect" pattern on the WNW parts? Errr... I don't really see a lot of difference even though the enhancement set's price of 6 Euro/ about $7.50 is reasonable, and this manufacturer has a high reputation.
A number of aftermarket manufacturers are looking for ways to target WNW modellers but in general, just one person's view, the Wingnut kits are pretty good out of the box.
That said I'd applaud any aftermarket decal manufacturer giving us bolts of four and five colour lozenge that reflect reality rather than the pre-shaped blobs of dubious lozenge we get in the WNW kits. WNW seem to have their own 'take' on lozenge colours which is at odds with everyone else.
Dave Wilson
Gold Coast
Australia