Pz1's were most numerous during the Polish and French campaigns, where they generally tended to die horribly. If FH2 ever gets to these, then it would be a worthwhile addition, but not really in later campaigns. Some were shipped to Afrika Korps, and these were replaced with Pz2's as soon as possible. Pz1 did see use in the Balkans campaign, so maybe could be used in Olympus (if 9th Panzer still had them at the time). Was again used in small numbers in Barbarossa, where it was finally deemed totally obsolete and unsuitable for Eastern Front anyway.