From a user:
I just wanted to make a suggestion. In the "Molecular Weight Estimation from Absolute Intensity Calibration," everything is in terms of electrons. For neutron users, or just more general scattering purposes, it would be nice if (in parallel to the existing worksheet) there could be a few more boxes where instead you could just specify the contrast of your molecule with respect to the solvent (i.e. in units cm^-2). Alternatively, there could be boxes to specify the SLD of the macromolecule and SLD of the solvent (in cm^-2). This is presumably calculated internally from the electron numbers that are plugged into the current form, so it would just be a matter of adding boxes that show the result of the calculation. It could even show the SLDs that are calculated from the existing form as you type in, for example, the electrons per volume of solvent etc.
This is something I've been thinking about for a while anyways, since most folks these days calculate contrast with something like MULCh . . .
As part of this, another user suggested looking at SASSIE's contract calculator module, possibly to be added as functionality in RAW.