In the EA all attributes had two benefits. They reduced it to one mostly, Wits has still two goodies, it affects initiative and gives + critical chance. It's an advantage if one of your chars goes first, of course a lot less advantage as going first with the whole group, as in the EA.

If you put Wits only on one char, your choice. If you want more crits, it helps also your other chars. 1% may sound low or nothing but crits can be rather strong in the game and Wits accomplish the other sources of more crit chance. When I read of late game two-handed warriors with 100% crit chance and 280% crit damage, one-shotting most enemies, I'm glad that Wits gives not more than now.