It would have been interesting to have seen how Ruud would have fared if he continued until the end of the season. Whilst the football in his short spell wasn't amazing (when is it?), he played to the squads strengths, i.e. 4231, mid block, counter, etc.
With Amorim, whilst I like what he's doing, and strongly believe it will come good, due to such a drastic change in system and style of play, it would have been much more suitable for both parties for him to come in during the summer. That way, he would have had the chance to sign the players suited to his system, in addition to having the whole of pre season to work on it.
With that being said, I guess the earlier Amorim has the chance to find out who's good enough and who's not, the better. He did say the storm will come and feck me, it hasn't half.