I would argue that the benefits of wis are somewhat more indirect for a wizard compared to the obvious benefits of int, but they are there. Granted, while I do tout the advantages of being able to lower the save of a foe every encounter, it is also worth noting that there is a notable dearth of save: ends spells at heroic tier, only a handful at paragon, and the majority are reserved for epic, so it might be worth it to consider wand or staff implement mastery at 1st lv, and pick up orb mastery as a second ability via the paragon feat. Regardless, you will still want to start investing in wis in preparation to (ab)use this ability.
Thunderwave seems innocuous enough on its own, but it really comes into its own when used in tandem with powers that trigger off movement, such as the bloodmage's bloodpulse or wall of fire (note that a literal interpretation allows you to push the foe in and out of the wall in a zig-zag manner to trigger the fire damage multiple times).
There are also a number of useful abilities keyed off wisdom, such as the spellstorm mage's storm spell. You will need a good wis anyways if you plan on entering divine oracle (arguably one of the best wizard PP in the game).
So the plus points are really more of a myriad of minor benefits coming together (and 1 major benefit).
And I leave you with this scenario.
Thunderwave seems innocuous enough on its own, but it really comes into its own when used in tandem with powers that trigger off movement, such as the bloodmage's bloodpulse or wall of fire (note that a literal interpretation allows you to push the foe in and out of the wall in a zig-zag manner to trigger the fire damage multiple times).
There are also a number of useful abilities keyed off wisdom, such as the spellstorm mage's storm spell. You will need a good wis anyways if you plan on entering divine oracle (arguably one of the best wizard PP in the game).
So the plus points are really more of a myriad of minor benefits coming together (and 1 major benefit).

And I leave you with this scenario.

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