I believe that WotC's current financial results strongly suggest that the overall answer is No. Yet I also believe that we cant think about Magic as a single game (as it was 30 years ago): modern MTG is more like a collection of different games that happen to share game pieces, and some of those games are more welcoming to new pieces than others
Mavinda, Students' Advocate and Firesong and Sunspeaker key off instants in different ways
ST07-007-charlotte-brulee and OP09-109-jaguardsaul both have trigger effects, so they synergize with your Leader's strategy
Plus, Wizards knew that Glimmer of Genius was on its way, and Glimmer of Genius is going to be better in all but a very small percentage of decks
Crown Zenith was the final set supported on Pokmon Trading Card Game Online
This means you'll be triggering the first three steps straight away, netting you an exiled card and six red mana to play with