How Can the Mavs NOT Be Better with These Additions?

[Halfnir]

Kyrie and Luka posted a 9-16 record since Kyrie started playing for the Mavs, which is around 30 wins season. So a 50 % improvement is roughly 45 wins  . 50 % improvement is big.

While Mavs had 38 wins last season, their record with Kyrie (not saying it is Kyrie fault) was really bad and the starting point is actually really low.

I'm super optimistic that this record was not the result of a dysfunctional Luka/Kyrie pairing, but rather caused by the main support cast of Bullock/Hardaway/Green/Powell as co-starters (with a sprinkle of Holiday/Nikitilia). That's a non-shooting PF playing C and 3 (+2) big guards covering the wing. That mess of a roster remaining after the Kyrie trade (combined with Maxi being hurt) was unsalvable within the season. 

With the addition of so many capable defenders, it's a completely new game this season.