NIce summary.
Regarding grids and lifestyle, there is an option in Run Faster pg 222 to have a Grid subscription at lower than Middle lifestyle.
Under user modes, AR, you are missing a - in front of the two.
On Noise I'd recommend a house rule that you use higher of the spam/static noise rating of source and target. If you just use source you get some oddities, ditto for just target. (Imagine of you wanted to hack a device in the middle of nowhere and you just used source. You could then do it best from somewhere within 100 miles. Or imagine you just used target, you could sit in a high spam zone and hack an office miles away with perfect comms, whilst the opponent suffered huge penalties from noise against you).
"Failed Sleaze puts a mark on you and informs host, who launches IC" - if informs owner, who has got the mark. Informing host is only if it's a host you are sleazing.
There is a common house rule / interpretation that "If you know at least one feature of an icon running silent, you can spot the icon " and "f there are multiple silent running icons, you roll once against a random one" combine to mean you can say "I'm going to look for an icon running silent that just attacked me" or "I'm going to look for smartguns running silent".
Programs "Limit of one per type per deck" - I parsed that with the line above as only one common and one hacking program. You simply cannot have duplicate programs on the deck.
Agents can also use other programs on the deck they are running on.
"Hosts can launch one IC per turn" - At the start of the turn, which might matter. In addition hosts usually only have Patrol IC running.