Super D2B - high resolution powder diffractometer
More detectors - 128 high pressure He3 tubes of 2 cm diameterHigh resolution collimators reduced from 20mm to 12mm widthSimilar collimators already produced - commercially available.
Bigger detectors - 300 mm high detectors & collimators as already used for incident beam, replacing 100mm detectors/collimators.Again, such detectors are commercially available.
More efficient monochromator - horizontal focussing as well as vertical focussing.Separate from the detector replacement. Requires development.
Notes:
All of these components are available commercially, and little development or manpower is required from ILL except for the monochromator and shielding.