being a bit of a numbers geek I would also find that kind of think interesting. I would question how much value it would add to the article though. The threat of the void is not going to be of use in any kind of 'stable' or reasonable measurable environment sush as end-game raiding and for levelling the only thing you need to do is get a feel for it. You wouldn't want to refer to a chart and consider whether an upgrade is going to increase your starts disproportionately to your void's threat generation, you just take it.

A lot of what I was trying to portray in the piece is that you need to practice with this stuff. It's a skill and an art to get the most out of your voidwalker. No amount of numbers or graphs will arm the budding warlock as well as getting out there and trying stuff.

As for using him on Sarth the only things to look for are high stamina and high armour items. He only needs to out-threat the healers (a normal tank will pick up when the drakes are dead) and this should be manageable if you use TotT and MD at the start and also rotate healers before the drake land. That said, I've not tried it in a long time so it may be impossible now or even really easy with current gear levels. It is probably unnecessary though so I wouldn't worry about it.