While I like the idea of Chrono in Brawl, having him 'replace' Roy makes about as much sense as Pommy replacing Pichu - there might be some aesthetic similarities between the two candidates in both cases, but the fact that they hail from different series from different status game developers (2nd party vs. 3rd party), there's just no way that could EVER happen in that manner; it's just like comparing apples to oranges. If Chrono gets in the Brawl line-up, it will be due to his OWN merits, not because he'd make a good 'replacement' for Roy...