Klien is good(guess he would be the best choice with Liuzzi talent/experience wise). Kral has shown some promising stuff so far but hard to say if he'll ever been F1 worthy. Yamamoto is a bit meh but at least he has shown so far he can be a decent F1 backmarker.
Don't forget, Sauber did exactly the same thing in testing last year. They're severely lacking sponsors, so it somewhat makes sense to get fastest times in practice via various tricks just to attract sponsors.
Test day 1 Perez did a 21.1 that he cut the chicane but earlier today (10th of march) he sat a 21.7 that wasn't cutted. Thats some proper qualli pace. Best time for a sauber last year in the race weekend was a 1:21.672 in practise session 2.
and also true about the sponsor thingy, they need some. And same as last year.
On the live text commentary for the testing days:
"Before the Sauber fans get too excited, remember this time last year the Swiss squad also ran an 'aggressive' testing programme, we all tipped Sauber as a dark horse and then Bahrain came..."
In the past desperate teams would run under the weight restriction during pre-season testing to drum up some interest (since there was no requirement for the car to conform to the weight regulations in testing). Is there any possibility that is still going on, or do the cars need to go through scrutineering during testing now?
Well Schumacher has put in a 21.2 in the Merc so that puts the Sauber's time into perspective.
Single lap times don't really give much information. Long runs combined with eye-witness reports as well as some paddock talk help give a better picture. Right now RBR are out front easy with Ferrari on their tails.
While I love McLaren, I think it would be intresting to see how Hamilton would do in RBR, I think the colors over all would suite him and more so, I think the life style would suite him more. I think it could be a good fit.
That said, who would replace him at McLaren? MSC? Wouldn't that be ironic.