I'm having a bit of a shitty time with my Shimano set up.
It should feel very sharp and powerful, I'd take it to a different bicycle shop to diagnosis the issues, could well be a new levers/calipers is needed as there has been some rare cases where no matter how much you re-bled it, it still very spongy.
It feels the exact opposite of sharp and powerful.
Then it should be fixed, find out if it's warranted, you should be able to have the brake feel amazingly sharp and powerful before the lever even hit the bar.
Your brakes really sound like shit (sorry, not much choice of a better word!).
It should feel very sharp and powerful, I'd take it to a different bicycle shop to diagnosis the issues, could well be a new levers/calipers is needed as there has been some rare cases where no matter how much you re-bled it, it still very spongy.