There has been multiple changes and multiple rants about this current in development update.
The suggested addition of waste mechanics to the additional +100% (30% for one specific resource) is a great addition.
Ideally it’s release could have been released in a positive manner.
As I see it most modules mine roughly similarly to what they do on the live server, but have an additional feature that plays with the +100% bonus resources.
Ideally I would have gone with the following;
Module / chance of resource maintained / failure yield modifier
Mining lasers/strip miner
T1 / 0% / x1
Meta / 67% / x2
T2 / 67% / x1
ORE / 100% / na
T1 / 0% / x1
T2 / 25% / x1
Augmented / 50% / x1
H / 75% / x1
Excavator / 25% x1
And then add to Mining and Mining Drone skills a +2% modifier per level to chance of resource maintained. On top of that another +2% for each level of specialization skill, and also another +2% per level of resource processing skill.
This would mean by the time you get to use T2 modules or drones you have an +12% modifier, and with a maximum of +30% modification with maximum skill levels.
This means with maximum skills T2 would maintain all the bonus resources and use of crystals being the only additional modifications.
It would also mean Factional drones, except the Excavator will be similarly benefit from high skills.
This would make it beneficial to train skills and for using T2, where the current release version of this makes the T1 equivalent to the ORE in yield/cycle/waste chance, and also same yield as a T2 with T1 type A & B crystal.
This is a first copy, more to come and refinements