Yep, same here. One of my favorite games of all time and I ended up loving Desperados more than the Commandos series.
Desperados 3 is very good, but not great. My main issue is with one of the characters who doesn't fit with the rest and on top of that this character has one of the most powerful skills in the game which almost feels like cheating (not gonna spoil more). Sure you can try playing using other characters, but it's still an issue when you have to set your own rules to keep the game challenging.