It looks like 5mm removable euro style will be what we use on the brick and on 8 point modules. For 16 point, we will have to go to 3.5mm, which is what is used on DL05/06 option cards and Click. I'm pretty sure that spring clamp versions are available for both the 5mm and 3.5mm sockets. Not sure how ADC will handle it, but current thought is to let customer specify which they want at purchase time, although they may just sell the terminals separate as a 'goes with' type part.
Those are fine. Even the 3.5mm like on the 0x 10-pt modules is preferable to the 16-pt 205 connector to me. I'm not real fond of that one either.
AB and Siemens both ship modules connectorless and you have to order the screw or spring clamp terminal separate, since they've offered both types (in AB's case with the advent of the Control Logix). That bit me the first time I did a CLX job because the SLC arms are screw-only and come with the modules. I just ordered the CLX modules and didn't realize they didn't come with connectors, so they they showed up and we couldn't start wiring. So that's a potential minor issue.
One approach would be to have an module order numbers "D1-16ND1-1S" and "D1-16ND1-1C", and still only stock one module and both connectors. The customer gets in his order the D1-16ND1-1 module and the appropriate connector stocked separately but only one virtual part number. That would avoid the "Oh, I forgot to order the connectors" issue, the longer part list, without committing 50% of the shelf stock to one style or the other and rendering it unavailable to the people who like the other style.
