Good to get a better picture of your trip. "Görlick" = Görlitz??
"I think everyone is genuinely trying to help, but I am absolutely sure that I don't want to purchase any saver fares..."
(The help was offered based on "I can't plan every train trip down to the exact time." If your saver fare ceiling is zero, that's very different.)
With your destinations there is no way a combo of saver fares and regional train tickets would outshine the rail pass option, even financially. The convenience of the pass for the travel choices you've made is quite clear. Your trip involves unusually long journeys that preclude cheaper regional options (which would also usurp way too much time.) Journey 1 and Journey 4 alone are unlikely to yield a combined saver fare price of around €170 - €180 minimum or so in March. The additional you'll pay for the other rail pass days on a rail pass is peanuts.
Bruges to Dresden using the IC bus is around 10 hours or so without a stopover, I believe. That IC bus between Brussels and D'dorf may or may not make for convenient connections and may increase travel time over a trains-only option. I imagine you'll check those details carefully. If the trains-only option works significantly better you can still use the German rail pass from the Belgian border to Dresden and pay for Bruges-German border.
But yes, your itinerary is one of those where a rail pass is really the only sensible way - it's not a luxury expenditure that you're offsetting in other ways at all - IMO, in fact, it's quite the bargain and a good choice.
I have ordered railpasses from DB myself previously without incident, only a one-time delivery delay of 1-2 days.