Kalista choosing her target for ult takes to long to animate

In competative matches getting out of the base fast is important. However, Kalista's ult makes this impossible for whoever she chooses as a target. The animation for her choosing her target is amazing but it immobilizes the target for several seconds after the fountain opens which can make an impact for first blood. The only other option is wait to place her ult until its safe. I just find it difficult to work out in high pressure games where the enemy harasses until minions come to lanes. Anyone else notice this or is it not much of a problem for the community?