Okay, so I'm back to iOS 4.2.1. While I was on 4.3.3. the two lines removed did help with the animations, but the overall feel of the phone still felt a little weird. I read through the posts to find out if anyone found out what the two lines actually did, because apparently they are there for a reason.
So they launch applications while loading them as well.
BUT...
So this does line that has been removed, and replaced with the new one.
"<key>launch-applications-while-
animating</key>
<true/>"
Found in the N88AP.plist in iOS 4.2.1
Instead of deleting the line, I simply put false, and timed the launch of a couple of applications, and they do indeed start loading after the animation is finished. 0.4-1 second longer for basic apps, longer for higher intense apps like games, etc, when this line is disabled.
Point in hand, this does the exact same thing without all of the sloppy animations. AND, you'll be loading them faster than a stock iOS 4.3.3 anyhow.
On iOS 4.3.3, the apps, by default already take a little longer than usual to load than previous versions ie. 4.2.1. (Don't remember how long they took before that.) Once those two lines were removed, it just did not feel snappy at all. Sure the smoothness was back, but it just felt like the phone was slow, as if Winterboard was installed with a whole bunch of themes. To me, it just didn't feel like the iPhone I once had. Where stuff loaded quickly, and correctly.
As another user said, maybe those lines were meant for an iPad 2 in mind. Apple loads stuff onto their softwares versions even if you can't even use it.
Carrier bundles, Camera.app, Phone.app, tethering, and all this other for an iPod Touch 3G and below? What the Hell for?
Even then the iPad 2 STILL loads 3rd party apps in that weird way. In lots of comparison videos you can see it.
So I'm just going to stay on 4.2.1. I had no business upgrading anyhow. The faster Safari is not really that much of a big deal for me, because the difference was minimal.
Tethering... Don't use it, and Ping... a supposed battery drain.
I'd rather have a faster phone all around, instead of in just one place (Safari.)
That's how I see it, after going through little things in each version.
4.2.1 = faster performance all around.
4.3.x = faster Safari performance. Yup, this is the true update that you get a "Safari is snappier" feel, but everything else is crappier feel.
At least to me it is.