All this awesome insight, I can't take it!
I never knew Sega and Bandai were one step to merging, THAT'S 100% new to me, I'd love to see someone make a fanmade Sega Bandai logo! lol
Now all this is similar to this:
http://www.neogaf.com/forum/showthread.php?t=716123
Nintendo bought 612,200 shares in Dwango who own 100% of Spike Chunsoft (which also absorbed T&E Soft, the makers of True Swing Golf on DS which was published by Nintendo no less).
It was even the President who sold those shares to Nintendo, and he's the largest shareholder at around 15%.
We may be seeing some fruits of this already since Spike Chunsoft out of nowhere is behind Fossil Fighters: Infinite Gear for 3DS.
They're no small company either, you effectively have 3 companies under one name, and a slew of IPs to work with (Spike seems to have the lion's share of the catalog).
It's a tad random, but they look like the top contender for a takeover by Nintendo.
Then again, so was Monolith having only worked with them in localizing Baten Kaitos Origins and together more directly with DISASTAH, Xenoblade was deep deep super secret beginning in 2006 as well since I believe Honne made the signature models then as a pitch or something, this was from Iwata Asks.
Nintendo's worked with Spike Chunsoft far more, prominently on the Pokemon Mystery Dungeon series (Chunsoft side), and also on 1st-party stuff like Wii Play Motion (some T&E Soft folks were in the Iwata Asks meeting, think they were absorbed into Chunsoft psecifically) and Mii Plaza's Warrior Way game.