Having 500 series coloration for synths is a bit like having insurance, most of the time you don’t need it, but when you do, you’re really glad to have it, haha. For drum machine it’s pretty great for the bus. If you are tracking bass, guitar and vocals, it’s indispensable to have a bit. Generally speaking, I don’t track my synths through it, because I’m a goof ball and just bought more modules rather than doubling it for stereo.
Also, I got the Black Market Modular Colour Palette eurorack module, which I found really useful, I haven’t used the CV capabilities, I just like being able to use these before the end of the chain, and being able to drive them in a more extreme way (especially with all the eurorack filters that let you tame the tone a bit more).