This is something we are also interested in pursuing. We have our Parent company and then a sister company and I have the users set up in seperate teams based on which of the companys they work for.
Case:
Team 1: Commercial Garbage - this team gets the majority of their leads from phone calls so we would want them to only see a certain group of fields when they are inputting the lead.
Team 2: Dumpsters - They deal with roll-off/single use dumpsters and have a whole other list of criteria that they need.
Having manual lead forms for each team would make the process faster.