User blog:Overlord Barty/To side deck, or not to side deck

Since to my current knowledge very little about the competitive enviroment of the game has been stated, I thought this would be interesting to discuss:

Assuming that the game undergoes match play (Which is should to make the competitive game more interesting and skill based) should side decking also become a thing:

The point I want to approach this thing right now is from Magic World perspective: Magic World seems very much like it doesn't have enough space to run all the answers it wants to run, a problem that will only increase as the game carries on and decks get so different in play style to another. Especially the mirrors as the World developts.

Hell, the same is true of other Worlds, because even the Mirrors are so different to other matches as it stands that you want an entirely different set of counter. Especially when multiple different play styles from a clan seem viable at the same time. (Like Dragon World seems to have a very effective Item Rush in addition to a more standard control build)

So, opinions? Would people rather see siding be a thing, or rely on people making overall builds that include the considerations for these matches?