[quote=@Webmaster]
<Snipped quote by Heroic>

The answer is simple then: He absorbs multiple planets.
[/quote]

Compared to how much is already contained in him, it would take a large number of planets to make a noticeable difference. Secondly, when I say picky, I mean picky to the point that he won't take planets or other places that various races have a chance of using as a resource in the future.