Hmm. I don't quite know the line between a link vs a road. Road classification in general is often fuzzy in OSM. But, considering the planned road network, I think this segment is kind of an extension of Clark Rd (from a network perspective, not a naming one), so it might make more sense as a highway=secondary.

Though I agree that it is a bit awkward because heading eastbound on this segment you're forced to get on the I-5 North entrance.

When this is all built out and the signs are up, it would probably be good to go through and clean up the destination=* tags and related. Especially in an interchange-like area (and especially when roads don't have names per se) I think that's very useful data for navigation etc. ("follow signs for I-5 north, seattle")

Happy mapping!