I've been using KJ's amazing tool for over a year now and if he doesn't want to develop it anymore that's completely understandable, I've gotten my value out of it to be sure. I registered just to say this.
Since he is looking for pickit 2.0 instructions though I will be glad to put forward my thoughts on it.
As far as IDing full stat ranges by item name on the ground, this will be a lot of work and I don't have any input on that route, however with regards to highlighting good items in your inventory I have some general rules should be useful.
1) You can read the max range for an item directly from the game now:
2) A "good" rare will have a least 2 of of the following: IAS, CC, CD, STR/INT/DEX/VIT
3) A "good" rare should also have at least 1 more "primary" slot available, aside from the ones above. Item rolls are now separated by primary and secondary attributes. see:
The reason for this is in RoS you can only enchant a new primary (all the good stats above) by replacing a primary that is already there. On the above gloves I could enchant the gloves and replace the INT with +400vit or IAS.
As far as picking up items off the ground goes, in RoS you should pretty much pick up *everything*, without leaving any rares on the ground. This includes whites.
Anyway hope this is helpful for programmatically determining which items to highlight in the inventory screen, I know I look forward to having this feature again (and TurboHUD as a whole).