No, let's not. His purchases have been mostly shocking, and his style of football even worse. Dreadful manager, and the thought of him inflicting further damage by wasting a new owner's money is terrifying.
His purchases have all come from the bargain bin because of the financial restrictions placed on him. It is very, very rare to find a top quality player for the kind of money Lambert has been allowed to spend on the majority of his signings, and to expect him to find enough of these players to fill an entire squad is asking too much.
Most of the lads he's signed would make very good squad members, the kind of young players you want to see gradually get more and more game time alongside more experienced colleagues until they understand the job well enough to play week in week out. Unfortunately, because of financial restrictions, we've had to fill an entire squad with those players, with very little in the way of experienced team mates to help them out.
As I said previously, he's managed to keep us in the premier league using only inexperienced, young players, which to me indicates he's done a decent job. It would be a shame to sack him off at this point having given him no chance to build a proper premiership side.
To put it into perspective, the money Lambert has spent building the entire squad would buy less than half of one Gareth Bale.