Who now?

I've re-watched "Let's Kill Hitler" for a total of two viewings.

I'm having problems with this.

Spoilers:

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You were warned.

Okay, so first of all: Melody Pond regenerates in 1969. She somehow then jaunts forward in time to the 1990s where she grows up in tandem with her future parents: Amy and Rory. She even gets them together.

Yet River has cautioned in the past of the dangers of interacting with one's own timeline. So... um... paradox...

And the regeneration things. So she's essentially just a Time Lady now? Except that she's not. Y'know. 'Cause she gave it up. To save the Doctor.

How the hell does poison lipstick work, anyway? Wouldn't the poison affect the person wearing it as well?

And what the hell kind of poison suspends a Time Lord's regeneration powers? I mean, if the Time War wiped out Gallifrey and the Time Lords - a secretive people to begin with - how the HELL does everyone seem to know so much about their technology and abilities?

How did the mini-people have so much accurate data on the Doctor? I mean, I get that some folks might know the TARDIS is a Type 40 TT, but how does anyone know it was stolen? The Doctor is cagey at best on that story.

And since apparently the Silence and the mini-people can time travel, why does ANYONE care about the Doctor? I mean, if everyone and Bob can time travel, what makes the Doctor and the TARDIS so special?

Why bother cooking up a Time Lady child (in the form of Melody Pond) if you can already time travel? What would be the point?

And the Doctor's got a half-hour of agony to live. He changes into a tux? Wha? And suddenly he's got a sonic cane? Really, they're just placing more toys now?

River Song's become WAY too "Mary Sue" for my tastes. She was an okay plot device once or twice, but she long ago crossed into "bugging me" territory. It was a nice twist that she's Amy and Rory's kid, but she can learn to fly the TARDIS in a few seconds interaction with the machine? She can throw regeneration blasts?

The whole story around her is so goddamn muddled now that it's become just one giant, epic, jump over a shark. And it bugs me.

The Moff is starting to lose me. Saddens me to write those words.