Wow! Looking at your "first attempt" I'd say you had a few years worth of attempts under your belt. That was a great looking pie! So, your second attempt wasn't to your liking. Got to remember there is salt in the dough, the cheese, the sauce and then God forbid you put toppings on that have even more salt in them. Salt is cumulative in a pie so when someone tastes their sauce and it tastes good that is a problem because that sauce is going to go under Mozz that salt in it, on a crust that has salt in it, and then throw sausage or pepperoni on top... Before ya know it you have may as well be baking a salt lick for deer and the addition of Pecorino Romano may as well be a cheese salt shaker to top it all off.
So, take the salt out of your sauce totally and if you use canned tomatoes for your sauce use unsalted canned tomatoes. Cut way back on the salt in the dough but leave some in as bread without any salt tastes like, well, crap or newspaper. As you assemble the pie on the peel just prior to baking do not shake that Pecorino Romano or Parm all over the pie... There is a little secret that very savvy pizza places do... They only shake the expensive grated Romano in the center of the pie prior to baking so when it gets cut the first bite that is taken comes from that center where that sharp, salty Romano was placed... It's like pizza crack that hits hard and wears off as one eats their way through the rest of the slice and drives that desire to grab another slice right away.
With regard to your launch issue, don't dust your peel with flour. I watch everyone everywhere on these how-to posts throwing more and more flour around and it is sickening. Raw flour is gross... May as well be throwing baby powder all over the place and wonder why pie tastes like crap after being dredged in it and sprinkled with it over and over.
Use just enough flour to stretch on your counter top and have your pizza peel nearby pre-dusted with coarse semolina flour. That semolina is like millions of little ball bearings that let that fully topped skin slide right off and that semolina does not get into the dough for the most part... You pull the pie and give it a shake on a cooling rack and any that stuck to the bottom falls off while the rest in the oven on the stone gets swept away so there is a clean hearth for the next
Just my 2 cents