It will be great to have IPC-7351B based land pattern calculator integrated into Pattern Editor.
Also in standard libraries there is lack of common land patterns (smd resistors, capacitors, inductors, leds, diodes, SOT-23), compatible with 7351.
What do you think about DipTrace integration with web-based libraries such as discussed there: http://www.pcblibraries.com/forum/pcb-footprint-expert-vs-lp-wizard_topic312.html?

We redesigned our standard libraries and they are compatible with IPC7351 standard. But patterns have different names because IPC standard offers complicated footprint names.
Please let me know what patterns you can't find.
Web-based libraries is not very good idea for us because we won't be able to control library creation and be sure that they are correct.