Got a Wii U? Live in North America? Good news for you, friend: Mega Man Battle Network 6 will be arriving on the Virtual Console tomorrow. CyBeast Gregar and CyBeast Falzar will set you back $6.99 a pop.
As a friendly tip, you should be able to unlock trade-exclusive Battle Chips from the Comm menu. After saving your game, these special Chips will end up in your pack (EDIT: The e-Reader BBS quests were unlocked by default in the original U.S versions. They should still be here regardless).
And with that, the entire MMBN series - no, the entire Mega Man GBA library, has a home on Wii U.