The principle of ``Big Pieces First'' doesn't just apply to 5-square pieces in the early game.
It applies to every piece we play, and we should always follow the general rule of playing bigger pieces if we can.
Blue didn't need to play the i2 here,
instead the v3 would have been better:
This is especially important if we're considering using the i1 or the i2 piece, because these pieces become very important in the late game, and having used them early is quite often a big problem.