First off, 6 is too many Fractals. Even RoL/Hope runs with 5, and I would argue that Fractal-ing RoLs is more vital to that deck's success than fractaling Pests is to this one's. Also, by reducing the number of Fractals you have, you can in turn take out an Aether Tower or two and replace them either with Pends, or any combination of Steals, Dusk Mantle, and Vampire Dagger. Before you decide that I'm wrong out of hand and disregard this (I promise, I have read all of your previous arguments), please take into consideration what I say.
First off, the fact that you label this "Pestal 2.0" can be very misleading to a new player. This could very well lead them to believe that this version is better than other posted versions and, to be perfectly honest, it's not better. Not necessarily any worse, either, and that's one of the beautiful things about Pestal; the fact that there are so many different ways to play it depending on what you think may be coming.
Also, when it comes to adding in Steals, this is a very effective weapon since the goal is to achieve a quanta lockdown, or very close to it, of your opponent. If you are able to get that lockdown, but they are in turn able to get out a troublesome permanent or two (Fire Shield, for instance) and then you are able to Steal that permanent, you then have that game won. In essence, they're using their last gasp of quanta to play something that could possibly buy them the win, and you are in turn snatching that
hope from them. You're giving yourself another out, another win condition, which will always be superior to having only one.
As for the Dusk Mantle and Vampire Dagger, well, see above about win conditions. The more things you can give your opponent to have to worry about, the better. Also, there is exponentially more CC in game than PC, so they can do wonders in the early game, especially if your hand gets flooded with quanta producers and Fractals. In fact, the two of them put together can almost win a game for you by themselves.
These suggestions will not cause this deck to beat all others, but the intent is instead to make it more viable against a wider variety of decks. Happy elementing!