Character creation.
-the sub set of language skills, the read/write skills based on your starting knowledge. i Don't use them, ever, so no need to include them.
-Task pool. The game does have a official Task pool, its for drone rigers controlling multiple drones at the same time with special gear. i simply rename that Drone Pool. My Task pool (that i made up before i bought the rigger book

Layering Armor.
i round up for layering armor instead of down. Example: armor jacket 5/3 and vest with plates 4/3 Should be 6/4 with a quickness penalty of 9 (5+4) so any person with a quickness less then 9 would suffer a +1 difficulty doing anything quickness related. Q6 would be +3
i round up. so 5/3 + 4/3 = 7/5 QP=9. makes runners a bit less, squishy
This is why i also HIGHLY recommend Form Fitting Armor (CC 51) its 4/1 c10 and has NO penalty for layering.
Concealability.
if you're walking around with gear that has a rating less than 5 in a "normal" situation, people will start calling Law Enforcement, no roll needed. that gear in a bag or duffle will stop this.
some gear listed in SR3 and Cannon Companion, (CC), will multiply concealability by 50%. thats changed to a simple C+2.
Highly recommend everyone buys QDC Holsters for their pistol type weapons for 150Y. Quick Draw Concealable Holster lets you draw your Pistol (with a concealability 4 or higher) as a simple action, not a complex, letting you draw and shoot in the same turn. also adds C+2 to concealability.