Show in the client the set that is being played in the limited challenges

[eccelleente]

Maybe write the initials of the set in brackets next to "limited challenge" in the client.
I tried to find out if today it is innistrad or foundation but couldn't.
The "more info" button in the client put me in a web page very generic, I don't know if it is written there somewhere but it is not trivial at all.

 

[Deep_Squid]

While I wouldn't mind this feature, you can always tell by looking at the payouts. The boosters/set prizes will always(as far as I know) match the set being used in the event.

 

[Chris-E.Vans]

The problem ist the same for Preliminaries as well. I could not find out, what format was being played and viewing the payout would not help me, as the payout was in qualifier points and play points only.

So I second OPs suggestion.