IMO Jones is likely to make a better middle-order batsman than Strauss ever will. What a waste of a plane ticket, flying Strauss all that way for... what? Why didn't they just content themselves with Collingwood and Jones?
Yeah, you're right that Collingwood was out for a lot of last season (closer to 2\3s than 1\2) but despite that unfortunate fact, he still didn't do well in his few First-Class games. Love, Aussie or not, did. The substandardness of Muchall, Thorpe, Pratt, Mustard, Peng, etc. and the fact that Lewis and Gough had disappointing seasons doesn't IMO say anything about Collingwood. If he'd played well he'd still have had a better average than he did.
His long-term First-Class record isn't especially relevant - 1999 is a long time ago - and in 2001 and 2002 Collingwood's First-Class form was good. But, simply, I don't believe it's ever a great idea to pick a player whose most recent games \ season hasn't been good.