The biggest problem I had with the 1st edition of Time Barons is that everything wouldn't fit back in the box once you sleeved the cards.
With the 2nd edition it isn't a problem, at least if you use premium sleeves. I suppose you could pull out the little insert and still have everything fit in with penny sleeves, but it all definitely fits with the premium sleeves.
The card size is standard trading card game size, in case anyone was wondering.
On a side note, I like the components better in the 2nd edition as well.
Looking forward to trying out the expansion cards and the new game modes.
Just curious what sleeves you used?