You don't have to re-open breaches in order to learn about these secrets.
Ambitious as always, Barry insists upon re-opening the breaches in order to get to Zoom—who, by the way, has a pretty tragic backstory. Harry helps Cisco fine tune his powers so that he can use them to control the breaches, and Barry uses his fancy tachyon device to get the upper hand. (Where can we get a tachyon device? Do you think they sell them at Sharper Image?) Barry’s new extra speedy skills have to be enough to stop Zoom... right?