I was looking for the same functionality and ran across this old post. I agree that it would be easier to lease WCP but I find it shocking that the display of wells on the 2D Viewer is not included as the functionality which is included on the inline and xline views. This should be a basic functionality even if only on the Pro version. The viewer is just that, a viewer, but finds good value when looking at and plotting zigzagging lines intersecting wells.
If you want to charge more for this basic functionality, yes, it is included in the WCP but then allow labelling markers and or horizons in WCP. I consider this is another oversight of a basic functionality used in interpretation, and presentation of interpretation not a frill.
Joel