I agree with Max that the Doepfer A1116 is probably 'more of the same' for you and therefore not that useful. There's other types of voices out there like wavetable vcos that you may enjoy for techno. But maybe you have enough voices already, in techno there's usually a limited amount of voices, and a lot of space that is filled up with effects like delays.
You mention you want to travel with this system. Eurorack can be bulky, heavy, break easily. You will have to plug and unplug everything between rides. If travel is important to you, maybe other types of synthesizers are more interesting to you. For example, Elektron devices can do much more in a much smaller space and no cables as well. I doubt you'll be happily euroracking on a train with this system on your lap.