I'm really shocked. it's such a regression for Slash: from Coma to VR songs. yes, it is a choice. but the difference in quality, inspiration and originality is soooo huge.
WTF are you talking about. They had like 4 yrs to come up with Illusions. They formed a band wrote the music and put out an album in under a year with Velvet revolver. I would imagine slash would change things in songs on Contraband as well if the songs were kicking around long enough. He probably wanted to do something different (Coma at the time) to show AXL he could.
I don't think they all waited to come together to write songs. They must have said: "Hey I have such a riff (or song)" and then tried to evolve it. So I think they had also more than a few months to write songs.
and about inspiration, you can compose 2:30 or 3 minute song, and it can sound more inspired, more original than a 8 minute song. (instantly Double Talkin Jive comes to my mind). You can play a solo which amazes every one, and make a standard song an incredible one, like Sweet Child O'mine, November Rain, and countless GNR songs.
I don't agree with "the longer you wait and compose, prettier and more experimental your songs are" thought.