I think it is about time to start taking +100AP instead.
There is now enough AP that doing hardened Scandinavia (and regular far land) is no longer required, and enough to finish HCCC with just 2 or 3 drafts.
Right now it is still about 1 day per super, give or take depending on how active I'm playing. Most of the time is actually waiting for army production to get to the first market. This is probably going to be slow to improve as I already have insane ACampB and draft boost artifacts, so the benefits from advancement are quite marginal.
For artifacts, it is just a matter of getting SAC/MD/MCB/TD to insane (preferably in that order), and then grab a second TW, and maybe an army camp discount, mine boost or BMB/TMB. The rest seems too niche to be useful.
@ShadowHawk, as far as I know, mostly only the first wave of players made insanes by digging. Things have changed since better strategies have been found.
Re: Shadowhawk yes if someone has insane artifacts that early, it means they spent a lot of time digging, or bought an artifact.
I'm about to do my 5th SA, and I will have 5 Legendary Artifacts, so I could upgrade one to insane on my next one, though I'd sacrifice other artifacts
Some people took a LONG time to do their first SA, so have more artifacts to start with.