I would. But I don't want to dictate how it is done in your state. Again, if you find rottielover, PM him with the permalink and discuss it with him. If everyone gets on the same page, so much more gets done. The Wiki also has the best editing guides and covers splitting and unsplitting roadways.
Yes, if you edit a road and lock it, it is locked at your level 1. I come along and update that segment. Once I save it, the lock level goes to my level 5. There was talk of waze giving the ability of higher editors to lock segments to a lower level, but hasn't been introduced yet.
I've applied for AM and I'm very knowledgeable about creating roads, intersections, turn restrictions, etc. Someone basically didn't finish Battlefield (east/west) as a 2 separate lanes. I can work on that. Looks like we have several other major roads in the city that need that done as well but I'll request Unlock on those later.