Achievements are an important part of any game. The plans are to include them, maybe not right off the bat but somewhere along the line.
Glad to hear this, it doesn't really add anything to the game (so no worries about balancing and such) but it's a fun little mini game for the user. Elder Scrolls Legends has titles that you can earn for 'Winning 100 Games', 'Dealing 1000 Total Damage', 'Complete 60 Quests' and so on.
I strongly support the idea of achievements, especially if they won't be limited to generic "Win 150 games as Northern Kingdoms" and such, but also feature more achievements with different, more creative conditions (like destroying a Kaedwen or Aedirn related unit using Draug etc) . I think that implementation of achievements may also convince some players to keep on playing after they fulfil their other goals (like getting or the cards and similar).