First, Patrick, good job man, good job. Thoroughly enjoyable read. Props where props are due.
Second, I am really surprised at the current priority system. I was filled with trepidation when I first heard that Priority would be used. However, fears have been attenuated.
Third, while I refuse to jump on the band wagon of whether Limits are or are not needed/wanted/etc, because they are part of the core rules, I do have issues with what I have seen with the Limit formulas.
I agree that Strength, Body, and Reaction should be a factor, but raw muscle power does not make sense to me as the major contributor to a group of skills that only some of them even factor Strength as a concept. Also, Intuition being left out of Social seems a bit odd as well. That being said, I have played with a few numbers and have reworked the limit formulas. These were re-worked with the express thought, NO attribute should be left out of the formula, and emphasis should be shifted slightly.
Physical = AGI*2+STR+BOD+REA/4
Mental = LOG*2+INT*2+WIL/4
Social = CHA*2+INT+WIL+ESS/4
Now, some reasoning behind this.
Physical: to be honest, in my experience and understanding, eye-hand/eye-foot coordination and balance is far more important overall than pure power. However, as someone else (Umidori I think) posted, if you aren't fit and reasonably in shape you cannot utilize that coordination to it's fullest extent in most circumstances.
Mental: I was pretty OK with the formula being the way it was, but it has been my personal experience (and YMMV) that Intuitive leaps are often times just as important as pure Logic, if not more so. I work in corrections, and I can tell you from personal experience, The ability to use logic creatively is what differentiates Smart from Intelligent IMHO. Will is obvious for the fact that you have to have the discipline and drive to make the most of those gifts.
Social: I have to say, I really like Essence being added into this. It really brings back a thought of the dehumanizing aspect of becoming more machine than man (Flash backs of old AD Police ). However, Intuition not being included seem...counter-intuitive? Having worked customer service for more than 2 decades I believe Intuition is definitely a factor. Willpower has already been addressed as to why.
All this being said, "How does this affect the Limits?". Some but not as much as might be thought. In this, listed below are the differences between. Now with Avg, I am assuming the standard of 3 modified by racial mods, Max assumes unaugmented attribute maximum, as how augments affect limits are as yet unclear.
OLD: Human (avg) P4/M4/S5 uncybered S4 if full cybered (0.01 Essence)
NEW: Human (avg) P4/M4/S5 uncybered S4 if full cybered
OLD: Dwarf (avg) P6/M6/S7 uncybered S5 if full cybered
NEW: Dwarf (avg) P5/M5/S6 uncybered S5 if full cybered
OLD: Elf (avg) P4/M4/S7 uncybered S5 if full cybered
NEW: Elf (avg) P5/M4/S6 uncybered S5 if full cybered
OLD: Ork (avg) P7/M4/S5 uncybered S3 if full cybered
NEW: Ork (avg) P5/M4/S4 uncybered S3 if full cybered
OLD: Troll (avg) P8/M3/S4 uncybered S2 if full cybered
NEW: Troll (avg) P6/M3/S4 uncybered S2 if full cybered
OLD: Human (max) P8/M8/S8 uncybered S7 if full cybered (0.01 Essence)
NEW: Human (max) P8/M8/S8 uncybered S7 if full cybered
OLD: Dwarf (max) P10/M9/S9 uncybered S7 if full cybered
NEW: Dwarf (max) P9/M8/S8 uncybered S7 if full cybered
OLD: Elf (max) P8/M8/S10 uncybered S8 if full cybered
NEW: Elf (max) P8/M8/S9 uncybered S8 if full cybered
OLD: Ork (max) P11/M8/S8 uncybered S6 if full cybered
NEW: Ork (max) P9/M7/S7 uncybered S6 if full cybered
OLD: Troll (max) P12/M7/S7 uncybered S5 if full cybered
NEW: Troll (max) P9/M7/S7 uncybered S5 if full cybered
At minimum stats, trolls have are superior in every way.
This does lower the caps by a point or so in some areas for the average attribute range, but also increases in others. However, the big change is really with maxed natural attributes. A troll will still have a mechanical advantage over all other races in Physical limits, but that gap isn't so drastic as it is now. Also, ALL attributes become important in the totals.
Anyway, this is all based off of current information, which is understandably vague (being Previews and all), and is conceptually more functional, IMHO.