> I’ve got 1400 init scripts my systems, each over 800 lines long, before I switched to systemd

There is something wrong with those numbers. Can you upload them somewhere or let me know what distro it was? I am curious to take a look.

If there is 1400 of them, each over 800 lines long then you have 1.1M lines of init script code, which doesn't seem right.

How many of them did you use daily? All 1400? 5? 10? Because checking sanity of ten of them, even if they are whooping 800+ lines of code (I'll have to see that) can't be compared to over 300K lines of monolithic systemd.