Evoxius
It is easier to deal with problems when they are all lumped together. All the escaped death eaters now can be caught and sent to Azkaban if they try anything. Lucas can be free to go after the horcruxes at his leisure. Sirius Black will be freed and House Black will be in his corner. Lucas is one smart cookie huh.
And here I thought Harry forgot about Pettigrew. I thought he was going to escape and the GoF was going to happen anyway. But it seems that CoS will happen... probably this year too. But seeing Harry being proactive, he will probably kill/make the basilisk his pet before the Diary possesses anyone. DEs don't know Harry's a Legilimens. It would suck if they sent Draco to spy on him though, he's young and a first year. There are very few times where I feel bad for Narcissa, and this is one of them.