It would be a lot easier if one only had to account for the sound of whichever new component is being added. However, no component operates in isolation. No doubt more seasoned audiophiles will experience less of this, but speaking for myself, I never know quite what to expect when introducing something new to my system. I read reviews to garner general impressions but over time I’ve learned not to get my hopes up prematurely.
As far as lateral moves and "improvement" goes, from my perspective, it depends upon what is gained and what may be lost. I don’t prioritize every aspect of the sonic presentation equally so I’m willing to give up something I prize less for more of something I prize more and I have no problem calling this sort of trade-off a "win". However, I understand this approach may not satisfy others

