With atleast a little bit more time to think, these are my current thoughts:
1) I think I'd prefer to win 1 game and lose 2, than draw 3 games. Both give you 3 points, and the 3 draws perhaps leads to the idea that defences win the league, but the city way is simple, out score the opponent, if a goal or 2 goes in then so be it. I'd rather build off of a team that scores and fix defense through coaching, than build off a team that defends, and fix scoring.
Seems like Pep swung the other way, changed the system to build a team that defends well but needs help scoring. I'd rather the old system, and have him coach individuals to succeed in it.
2) In the 2nd half Pep went 433 (for people who weren't noticing and were clamouring for it), and we attacked alot more than the 1st half, and we could have scored... but it was all kind of meh. Rushed, just crossing, and if it weren't for KdB, pretty poor crossing. It was atleast the old attacking system, but I think Pep's subs were the wrong ones, and I think he should have instead done this:
Sub Out: Sterling, Jesus and Mendy for Ferran, Mahrez and Aguero
Pep played Rodri as a DM, with Gundogan ahead of him next to KdB. Gundogan played well, Rodri not really. I think Pep wasn't attack-minded enough actually, might be odd to say considering Jesus and Aguero were on, but I think we would have been better served with Gundogan as the DM, Rodri dropping as a CB (false CB) partner to Dias, and shifting Ake to left back to play inverted with Cancelo.
Then the attack is Ferran and Foden left, KdB and Mahrez right, and Aguero center. These players have better ball retention in tight spaces that is necessary against the low block, and have creativity (this is why Ferran-Mahrez over Sterling-Jesus).
This is the attack that I think would have been better served (obviously I have hindsight). Foden playing inside, with the link-ups we saw, looked far more effective imo.
Scoring is a problem right now, we need "weapons", combinations that kill, not crossing into the box and hoping. KdB-Mahrez is a weapon that we've seen nowhere near enough this season imo.
Foden-Ferran is a weapon on the left that Pep should develop, they are the perfect age, one is left footed and the other is right footed. They can swap positions comfortably. He should just put them there and let them develop the chemistry to make it happen, we saw a bit of it before on the one chance they played together there.
3) As a final note on other players, really need more from Mendy in terms of creating on the left, it's just not been good enough lately. Considering how lackluster Ake was as CB (yes, very little game time I know), I'd just play Ake as an inverted LB to develop his game and use him like Walker to stop counters, let the 5 players ahead do damage.
I also think Bernardo Silva could be great in a false 9 role, with Ferran and Mahrez around him, he can drop deep and link with Foden-KdB, we wouldn't lose the ball and have excellent creativity. Jesus needs rest.