How do you tell whether a home gym upgrade actually improved your training or just added more options?

It’s really easy for a home gym upgrade to feel useful simply because it gives you something new to do.

I’m trying to separate that from upgrades that actually make training better.

Maybe something saves setup time, gives you a useful range of motion you couldn’t get before, makes progression easier, or replaces several awkward exercise substitutions.

That feels different from buying another attachment that technically adds five exercises but rarely gets used after the first month.

For people who’ve upgraded their home gym over time, how do you decide whether something genuinely improved your training rather than just adding variety?