I only have myself to blame for watching the trailler but I was pretty pissed off they revealed Hank in pre-season trailer. Watched trailer hoping it wouldn't give too much away but just give enough to hint at things, keep you guessing and get me excited with some old timey music playing over (El Camino was a good trailer). Its so exciting when characters like Gale, Krazy 8, Tuco just show up when you weren't expecting it; Gus gets a pass because you knew he was going to turn up - but Hank you thought it might happen (there was clearly history between the two in bb and Jimmy is now getting into the world of representing the guys who he was selling the disposable phones to) but it would have been a nice surprise.
Season 5 looks great though and really excited - also thought this might be the last season and happy it isn't
It's been pretty likely that Hank was going to turn up so I don't think it's exactly the worst spoiler moment for a trailer.
I'm really intrigued as to just how close up to the events of Breaking Bad we are going to get with this now. As Saul doesn't show up straight away in BB there's a chance we could start seeing things that he is up to whilst Walter and Jesse are starting out.
I haven't watched that many TV series in the past few years but Breaking Bad and Better Call Saul have have delivered tremendously exciting, compulsive entertainment. Looking forward to avoiding discussion about BCS series 5 and then watching it on disc in a year or so .