People you should calm down now!
Now my coments:
Poland with German culture, random leaders and Prussia's ubber leadeds is much more more more more stronger than BB, Delo. Only you dont think so. Also Poland in the beggining rule in Central Europe, so you can dictate your terms to both, Russia and Austria, its all a matter of how good do you play.
On the other hand, I think that everyone should play what it would like, since EU2 MP is already to hard to keep reliability (everyone here has RL problems), unless this choice isnt good for game balance.
Being BB/Prussia wouldnt fuck the game up and you have the "right" of first choice since your are a ATE1 payer (so you could also be Spain, OE and Russia, took by new players), but I really think you should re-consider your opnion in a more objective way Delo and play Poland.
Keep this polite or I'll ask TG for some penalties.