Exactly the other way around. I did not mean Ostheer would turn unrealistic with the Panzer III. I meant it is not unrealistic if they don´t have it. They can have it but it´s not a must have. Gbpirate voiced the opinion Ostheer would be unrealistic without it.
Still: I would also like to see it ingame. However I would like to see it as a substitute for the Panzer IV. Cheaper and a bit weaker. Like in the original Coh ToV, where you could switch between the bike and the Kübelwagen, Marder III and Geschützwagen, Kangaroo and Cromwell.
I was speaking more in the context of the campaign, not necessarily just the multiplayer wehrmacht faction.
Relic should've just had a early/mid war and late war factions to start. Could've launched with four similar factions, giving them room to do things like Afrika Corps, Italian faction, British N. Africa/British Late war faction.
of course, that's all complicated and such. I also really like Luvnest's idea, having Wehrmacht be a super aggressive, light/medium armor faction like it was in '41/ summer '42.