I don't dislike him. I don't live in Southampton and so there aren't any other Saints fans in my office, so when colleagues are ribbing me about Saints, it's always Long who's the butt of the joke. Ie someone gets angry and someone else says "You sound like (my name) when he sees Shane Long on the Southampton team sheet!" but I do think, on the whole he's been a good signing for us and he's done that unique job of coming on, when our backs are to the wall and we're defending something and using that instant burst of speed that you mentioned to put defenders under pressure and chase down lost causes.
Now, Long's legs have gone. He's not slow but he's nowhere near as quick as he was 18 months ago and defenders aren't as worried about him anymore. That was what his game was all about, you take that away from his game and what's he good at? Not a lot IMO.
Still, when he leaves, I will definitely wish him well.
Remember when he was linked with Liverpool?! Not that long ago either. About A year or so ago I think.