Lockon sounds like a stupid name you'd hear in a shounen anime. Wait...
Hallelujah (can be spelt with or without the H) is, however, simply too much. I cannot wait to hear the Japanese VAs pronouncing that name, especially the inevitable mecha yell of concern from his allies (the fem guy in particular) going "Halleluja~~~h!" after his mech gets hit by a bombardment. Of course, since it's a Gundam, he'll be unscathed (tho much grimacing will occur) and his allies will then heave a sigh of relief, perhaps even proclaiming, "Hallelujah!" -_-
Seriously though, that is a retarded name.
I don't care if the characters are male or female, but it does bring up the question of: what happened to the female MS pilot? The original 0079 was dominated by male pilots, true enough, but Zeta had lots of females (Haman notably, perhaps the best female Gundam pilot ever?) and even more recent series had continued that. Hell, even the bishounen laden Gundam Wing had Noin (not a Gundam pilot, but still an important character) and SEED Destiny had Lunamaria. I can't imagine that, even though these four are guys, that this new one won't have female MS pilots.
Can anyone recall the last series that revolved around a female pilot as a central character? I can only recall 8th MS Team, and that almost doesn't count, since it was so short and the lady pilots in question were either minor characters or separated from the main character for a good part of the show. I don't really consider Lunamaria to be central to anything in SEED Destiny...