There are upsides and downsides to every poker room, having spent a lot of the past couple of years playing on the "Smaller" sites I find it great for getting to know your opponents, however I have to admit I miss the bigger games and I think we are going to get more choice with the move, as regards it being harder as the opponents are better than Betfair, I am sure there will be plenty of equally bad players on there. My only concerns and I have to look into this, is that I use Holdem and Omaha Manager Pro and I am just dreading A.) It not working B.) Getting used to it on the new site.
I have to say though they are splashing plenty of cash out for the move and in my honest opinion I think the more variety or games, more players can only be seen as a positive.