A complete format shake up is completely reasonable. Vintage players rest on their laurels assuming that they won't have to adapt to new printings at the same pace as Standard players. What MODO taught a lot of local end bosses (for a lack of a better term) is that they need to adapt to survive, and not just rest on their same 75 week in and week out.
@Protoaddict, your list of cards is hardly a "shake up". They are blue, black and brown, the same three colors that have defined Vintage for its entire history. They are the same basic effects repackaged, much in the same way most of the War of the Spark planeswalkers are personal Howling Mines repackaged in various colors and sizes.
I think Vintage could benefit from a shake up that something like Standard experiences, where red oscillates from Tier 1 and Tier 3, color combinations go from unsupported to supported and back, and styles of hate and countermeasures go from existing to not. I'd like to see a Vintage where blue is green and black is red, where new printings cause an entire format upheaval but the format retains a balance. What if the two Spirit Guides outclassed brown's ability to generate mana? What if white was Tier 1 and the format respected that? There are so many unimaginable ways a shake up could really play out.
TL:DR - War of the Spark didn't shake up the format and an actual shake up would be cool as long as the resulting metagame was balanced.
last edited by Shopsaholic