Just a little fact...
Every single game currently available with the Brazilian exploit (239 including duplicates between regions) would only take 1.48 TB of space...
Sure, you could get 4TB for $100 but what's the difference if you can get 2TB for roughly half?
Even if you installed every available game on the ticket website you would still have 347GB left on a 2TB hard drive
Assuming you played every game for 20 hours 6 hours a day every day it would take you 2.18 YEARS to finish them all...
Just to clarify, 2TB is 2/3 of 4TB price (same make), hence my point 4TB is cheaper in a sense (not with Wii U only uses 2TB)
What I'm saying is... 2TB will be more than enough given the fact that unlike the PS4/Xbox One the Wii U games are comparatively small