Delegates to Minnesota's Reform Party convention this weekend will decide whether to take the fledgling, but stronger than average, third party into new directions. The agenda includes a speech from Governor Ventura and debate over whether to change the party's name. But the main purpose is revising the party platform. Proposed changes broaden the party's emphasis beyond fiscal responsibility and government reform - some of the more controversial planks support legalizing marijuana, providing health care to all and preserving the family farm. The party's state chairman fears an expanded platform will turn into an unwieldy litmus test for candidates - something Reformers have criticized the two OTHER major parties for creating.