Just wanting to know what the benefits are and if I should change it before going live with the latest update for my pack which is moving Forest and BC to their latest versions up from F3 and BC6.
That's actually a good question. I've been playing .09 for a few months (in single-player peaceful). It has some benefits, but I'm not sure they outweigh the drawbacks, so if my world gets badly corrupted or something, I might go back to .08.
Benefits I've seen:
- charcoal pile igniter - with a max size charcoal pile (11w x 11d by 5h, 605 logs), this takes 10 minutes to finish plus about 10 minutes for me to do the repetitive setup and breakdown, and usually produces around 900 charcoal, so that's about 1.33 seconds per charcoal, speed equivalent to around 67 Railcraft Coke Ovens ignoring the creosote oil.
- several generators have higher default efficiencies
- large boilers have higher steam per charcoal outputs
- LV cables can be insulated with black carpet, and thus crafted without even using steam machines (although electric machines can still improve the efficiency of material use)
Benefits I haven't used yet:
- pyrolyse oven
- seismic prospector
- oil drilling rig (I've been using buildcraft oil, and I've bred some oilberries that I might switch to once the nearby deposits run out)
- IHL migration features, like nitrogen from compressed air, and tiny platinum group sludge dust from purified pentlandite or chalcopyrite ore.
Drawbacks I've seen:
Many materials and items are more complicated to produce: rubber, circuits, machine hulls, titanium, tungsten, palladium, iridium, osmium, etc.
Maybe others can expand on this.