He'd need to be in range of them first, which doesn't seem likely to happen during battle as I doubt Piccolo or someone would rock up with the DBs in tow, not to mention Yi Xing Long would've just hunted down his siblings for their Dragon Balls if he was efficiently hunting them as he didn't seem to care about them. That, and it's debatable if he can interact with other sets of Dragon Balls when considering each one has their own differences. In the case he was in range and capable though, they'd probably power him up enough that he'd be virtually unstoppable.