I do think it is at least worth looking into insurance so that you can make an informed decision to either go for it or not, though
Well some might find this to be overkill, personally I find it to be important to integrate as many consistent ways to target things in this deck
Assquatch + Other Half-Power/Toughness Creatures Assquatch is a donkey lord with lots of half-stats
Last points I'd like to make before I turn this section into a full size novel
Thoughtseize Thoughtseize is the most played discard spell because it costs a single mana and the effect is unconditional, unlike its brethren Duress and Inquisition of Kozilek
I can see having cards in your deck that tap potential attackers, like Icy Manipulator and Opposition, so if an opponent doesnt draw a card from your commanders ability, you know you can keep your tap-down effects ready for potential attackers from their side of the battlefield