Conclusions:
1. The skillgain is not constant but variance is small enough.
The reason of this variance is to be determined. And if there exists lootius there could also exist
skillius, that is responsilbe for skillgain variations day by day.
2.The skillgain is not affected by your current skill level. Although stage 2. results are no published jet - I must say they look very similar. 2. Stage tests are performed by avatar with engineeging level 4000, so the difference in skill level should be large enough if skill level affects skillgain. The skillgain on 2. stage remains about the same, so it seems that it only seems that skillgain is reduced on higher professional levels.
3. Average ENGeneering skillgain per 10k clicks on standart damper BP appears to be 0.345 ESI after chipping it out.
This result leads me to some interesting thoughts. Assuming a young avatar joins the game and decides to become a top level crafter. ENG is considered one of the main skills, and let us assume that top level crafter needs ENG level 10 000. How long he have to click on dampers to reach that level?
Let us do some calculations
Chipping optimizer suggests that you need to chip in some 2279.84 PED of ESI to get to that level. Let us assume our young crafter is determined to do 10k clicks each day. That means that on day 6608, since joining the
EU, he will be a proud top level crafter, that is unless
MA will change something in skill system.
So young players get ready.. you need only 18 years and few months of nonstop damper crafting to join the elite crafter society.
In other words it is nearly impossible or rather insane to reach that level with natural skilling - of course standard damper may not be the best skilling BP around, but I would say that it is certainly not the worst and most probably offers best price / performance ratio.
So another conclusion to this conclusion - The crafting skill base grows up very slowly. I would almost like to claim that it shrinks, because chipping out loses 10% of skills, and whenever you see 100 PED chip in auction it means that 10 PED of engi is lost from global
EU skillbase and some young crafter will have to work 30 days to gain those 10 PED back into the system.
This allows me to assume, that as crafting skill base shrinks or remains about the same, crafting skill prices could raise once again and even exceed previous levels if the skills will prove to be useful (car manufacturing), cause there will simply be no way to get large amounts of crafting skills fast.