Oh, the brilliant Tilly whose forces massacred 5/6 of the population of Magdeburg, an act so brutal that it enriched the German language for the term "magdeburgisieren", to destroy something completely. It's nice you identify with such a guy. He's overshadowed in military skill by a handful of his contemporaries anyway - Gustav II, Koniecpolski, Wallenstein...
Backwater as defined by Merriam-Webster: an isolated or backward place or condition
<a distant backwater that didn't even have electricity at that time>
Nothing to do with being uncivilized, a proper noun to be applied to agrarian country when industrialization is underway in all neighbouring regions.
Expelled Germans can come back anytime they want, there are no restrictions on buying assets by non-residents in the Czech Republic except for used arable land and forests. If you mean they should regain Czech nationality, they voluntarily given that up when Hitler annexed Sudeten - those who actively opposed that hostile act were treated as anti-fascists and weren't expelled after all. If you mean they should receive reparations, you have a pretty high moral expectations. Let's make an analogy with African-Americans. They were enslaved against their will (unlike Sudeten Germans who willingly accepted their übermensch role), transported to a totally different part of the world (Sudeten Germans were moved to a country they always wanted to be a part of) and abused for centuries there (did you Bavarians abused Sudeten Germans?) before they finally became nominally equal (Sudeten Germans are treated like any other German social group in Germany). While you can say that a significant part of African-Americans are better off economically by living in the USA rather than Africa, the same applies even more for Sudeten Germans since being a citizen of Bavaria means you are almost certainly better off than being a citizen of borderlands in the Czech Republic. African-Americans don't receive any reparations for their historical hardships (and AA is not much of a help for current hardship as well) so I don't find it feasible for the Czech Republic to pay reparations to expelled Germans, who are richer than Czechs anyway. It's an issue of the past that politicians across Europe agree should be left to past.
And regarding forced labour for unexpelled Germans, they received the hardest of work for 80% of the price standard for that work. Compare it with the people from whole occupied Europe that were subject to Totaleinsatz during the war, received equally hard work and gained absolutely nothing in return except for substandard food rations. If it wasn't for some German initiatives that acknowledge the evil Germany did before and during the war, those people would never receive anything. Below subsistence natural remuneration and 80% of a salary is a damn big difference.