No, the lawsuit does not change anything about in-market blackouts. You will not be able to watch any Phillies games on MLB Extra Innings.
Also regarding the Follow Your Team $10 option, it does have to be an out of market team (i.e. cannot select the Phillies in Philadelphia) and also, as mentioned, you need to have a valid cable/satellite subscription. That would allow you to watch the say the Braves play against the Phillies (if you selected the Braves as your one out of market team), but since DirecTV doesn’t carry CSN it doesn’t appear you would have access to that option.
Also, as mentioned, the 15 Fox Sports RSN’s are supposed to allow for in-market streaming for this year (no extra cost) with valid cable/satellite subscription credentials with the DTV/Comcast RSN’s hopefully brought into the mix by 2017.
If I understand it correctly, for those in markets where the local RSN(s) are Fox Sports, the extra $10 charge to “follow your team”, would only get you out access to the out of market broadcast (since the in-market broadcast can already be seen via FSGO app).