Do we need to standardize 10M of NaOH?
This is a highly concentrated base, which is very corrosive. I would assume, that its concentration is quite unstable. 

It will, for example, quite rapidly react with carbon dioxide from the air:
$$\ce{NaOH + CO2 -&gt; NaHCO3}\tag{1}$$

Also it will corrode glass containers, dissolving minerals like magnesium and calcium from it:
$$\ce{Mg^{2+} + 2NaOH -&gt; Mg(OH)2 v + 2Na+ }$$

A PE bottle should be used to avoid that.

Even if you worked in a very clean and low humidity environment, the surface of your pallets will be corroded since sodium hydroxide is hygroscopic and will further react according to $(1)$, even when stored carefully. 

Therefore the concentration you obtain by weighing the pallets can only be quite approximate. If you need to know the exact concentration of your base, you have to calibrate it versus a primary standard, like dried succinic acid, before and after the intended use. 
In your case standardisation will indeed be not easy to perform, since your concentration is very high. Most likely there are uncertainties to the procedure that will likely leave you with similar error bars than not doing the calibration.