Lets talk about the positive impact of Poland being in the EU.
Like addition to Culture, Cuisine, Custom, Industry, Science, Literature, Art, Etc.
Poland has always been in Europe, and Poland should have been in the EEC/EU from the first moment, except were were occupied by Soviet Russia (after the brutal German occupation). Saying so I don't think Poland is introducing anything new in the cutural sector, it didn't provide before it was in the EU (Chopin, Copernicus, Penderecki, Gorecki, Marie-Curie etc).
One thing Poland does provide is a buffer between Europe and Russia. It has 38 milion people who are pro-Western, have a history of democracy and are themselves a stable society/country. This is of great benefit if not only for NATO but also for the US as Poland is a great military ally for the US. As for the EU, EU is fine and all, but I think Poland should not compromise on a great relationship with the States to gain favour with the French and Germans. :)
big" countries do, and perhaps force something more like a constitutional convention, rather than the rubber-stamp chin-wag that France and Germany seem to expect
France and especially Germany want to dominate the EU. Personally I don't think the Germans should even have a greater percentage of votes than Poland. In fact maybe they should pay a few trillion dollars of reparations to Poland for destroying it between 1939-45 and then letting the Soviets have their way with us. Of course this won't happen, but if the world was really fair Germany should pay for WW2 or at least as colloquially said on some internet forums STFU :) when it comes to issues dealing with Poland. I agree 100% with the Kaczynskis. Germany destroyed Poland and now want to dominate it. I especially think that Poland should keep good relations with the Yanks and the UK,
if anything BETTER and closer ties than with Germany. Despite this I have numerous German friends and they're all wonderful people, so please bear in mind I'm speaking only in terms of governments here.