It would be very helpful if there was a way to identify or label loads as they are being input. For example, "wall above" or "ceiling joists". On multi-loaded members, if one of the loads change - say wall is moved - it can be confusing to come back an reanalyze the member. A simple label field would be a big help.
StruCalc Load Tracker has been released and allows the linking of loads together.
As far as the labeling of individual loads I don't know about that. Seems like a pretty big project. I will add it to feature requests for StruCalc 10.0. but can't make any promises.
Or even better; what if we could link the loads from different beams? If point load 1 on Beam 2 is the reaction of Beam 1, then modifying Beam 1 would automatically update the point load value on Beam 2. That would be the holy grail right there.