Thanks for the deeplink, I should spend some time digging in. Though as far a pre-existing complexity in modern engines goes: engine performance has regressed

Thanks for the deeplink, I should spend some time digging in. Though as far a pre-existing complexity in modern engines goes: engine performance has regressed (in absolute end-user terms), and engine conplexity is also a barrier to entry for competing/new engines. So this isn't exactly "good".