Well... I finish watching The Silver Wing just now and a very quick impression come down to very entertaining show but feel disappointed in the story, plot, and certain character in the show. Not saying the show is terrible as it isn't really but the whole plot of the show feel cheap a bit when you start to analyze it (this is more into the peace of the world side which get stupid when you realize how it will end).
As for the character development, they're okay for the most part but I am not fond with the main character of the show, mostly at Fan. She act childish which make sense of how old she is but this get very annoying in serious situation. In a way, this personality make me feel annoyed when she is in the scene a bit or start talking. As for her side partner (Giselle), she remind me more of Lavie in the 1st show as both have the same issue they have to dealt to during the show (which isn't a bad thing). She is a quiet girl who is actually smart but never show this off.
Also, majority of old character in the 1st show come back but more in the end when they come together to fight for the final battle. This isn't too bad but at the same time, certain thing you found out which annoyed me a bit. For one, Dio is back from the death. Didn't explain how he survive from the incident in the 1st show which confuse me. He is okay in this show and do less odd thing in this show. Another one which is a downer is Claus is paralyzed (what?) and in a wheel chair. No reason of how he become what he was and really tick me off when I saw him for the 1st time.
I guess the best part of the show is mostly come down to the battle scene which is still look fine. I guess if you love the 1st show for the battle scene, you won't get disappointed here as you will get quite a bit. The final battle scene is fun to watch even though it feel rush as you're watching it.
Another thing I notice when I watching this show is how many similarity of ideas or plot is been use from the 1st show into this. In a way, it kinda feel like you're re watching the 1st show again in repeat as similarity situation have come up before.
In a way, they're quite few more issue I have with this show and one of the bigger one is this show doesn't have the same feeling I have when watching Last Exile. It feel like this show is kinda a cheap cash in from the developer then making a sequel as nothing you like from the show is here. This is why I feel disappointed when I continue watching it. I guess if you like the battle scene in Last Exile, then you might like that part of this show but for the rest who want to see an unique storyline/plot, you will leave very disappointed and wish they don't make this sequel at all.
Overall, it's really an average show which you won't miss if you don't watch it. If you're a fan of Last Exile, I think it's better if you pass this as you will regret it. If you really want to watch it, go watch but keep your expectation down quite a bit. For non fans or people who want to watch another anime, skip this all together and watch Last Exile. It's more better in so many ways than this.