Also, do you wish the 'points' to have attributed data (i.e. be a block) or is it acceptable for it to be a point ?
Same question could be asked about survey stations, manhole covers, etc.
The decision may be based on what for and how you will use the data.
That has never come up, but if it did, we would not view that as a valid request. The primary problem is that we do not have an option in C3D to create "attributed blocks" from points, so it would be very painful. If the person requesting our survey was using some other software that creates points as attributed blocks, we could give them something like a CSV dump of the points, and let them create the attributed blocks in their software. But trying to turn C3D points into attributed blocks on our end would not be an option.
We frequently send a CSV dump of the points to clients, though (this would be a nice additional option in eTransmit, along with "include LandXML dump" option). When sending drawings to people using "other software" (pretty much everyone, since I can only think of one other firm in the area that is currently using C3D) we often have to export C3D drawings to plain Autocad format, exploding all the C3D objects into Autocad primitives. This pretty much destroys the C3D points, turning them into nothing but a pretty picture. Because of this, we also do a tweak to our points before exporting them, changing all label styles to one that includes Pt Num, Elev, and Desc (which is not the way we typically display every point). This means that when we export our DWG, all the points are still in the drawing as text that can be read. So the Engineer can still see all the points we shot, along with the Desc and Elev, it's just that the points have been exploded into lines of plain text by the Export to Autocad. But this is typically sufficient.
If the Engineer should need actual, live points for some reason, then we also send a CSV dump of the points, and let the Engineer load the CSV file in the "other software". But typically, the Engineer doesn't really need our points. Usually, we only need to send the Surface we create (sent in LandXML format, or as TIN lines in a drawing, depending on the "other software"), along with the DWG of our survey.