My worry is only that I may have had a system with various tools and things installed that was optimized nicely and then after the switch over (or in future installs) I didn't note that I really want something particular installed.
Of course, if it's an app, I will remember about it if I think "oh, I want X, oh wait, it's not installed now". But for behind-the-scenes system stuff maybe not. Also, if it's not something I used much, I might forget about it unless I have it installed and see it when browsing *or* if this process prompts me to notice it and consider whether I want to make sure to keep it around (or to get it for a future new system install).
Overall, this is about keeping well-documented notes about what tools I care about etc. for a good system install and usable set up for myself and for recommending to others. I had previously relied in *some* parts on the recommendations the KXStudio repos made.