This was brought up a while ago (check the two articles' comments) before AlexShepherd even got here. The general consensus seems to be against the merge, since, although they are the same person, they are still different characters from different games.
I'll put a bigger spoiler warning on the main page, just be patient while I set things up. And they are technically the same character. It's not a HUGE important spoiler that ruins the entire game anyway, plus the game has been out for over a year now. The biggest ZE fans already know by now.
While that is all true, it still is worth mentioning that his actions between 999 and VLR are entirely different, so much so that he doesn't retain the same age or appearance in any manner, and it was only mentioned near the end.
Then again, seeing the combined page as it stands, I think it works.