In some way yes the 30 day one had benefits but also felt quite lengthy and tiring if you were really trying to commit to it as you pretty much had to monitor it daily. On the other side it seems easier to earn the 6* unit this time around, I know last time it was a Gacha unit but all the same it is always good to have more 6* units that can be used in total war.
Who knows the may still be trialing these events so it may increase in time again.