@FediTips maybe, but I am not part of the developer community, so I am broadcasting the idea, so it may reach someone from the community.
Mastodon source code is incredibly complex and deeply structured; I know it, because I did some well documented little hacks, like increasing maximum status length or poll option count or changing Publish! button back to Toot! So the changes are not easy from someone who is new to that.
Importing existing lists marked as "starter packs" by instance moderators as list of followed accounts should be technically very easy; it is just the complexity of the code, which requires this to be done by experienced Mastodon contributors. Most importantly, there would need to be consensus in Mastodon community, that it is right thing to do...