I'm pretty much done responding to specific points here.
The little ramble about Mia Arkada's fate does provide some useful information, in that you're still angry that it happened rather than thinking about why it happened. I can't really help you with that, but i can say that, with regard to this need you feel to prove, IC, that your characters are skilled, or don't like racists, or... whatever you were trying to prove with a bowl of warm water, I don't have a single earthly clue why that was ever included, just... Don't. Just don't.
If you focus on creating scenarios that let you show off who you want your characters to be, rather than letting RPing opportunities come by naturally, this is going to keep happening. You're going to keep finding your characters in situations that don't make much sense, with characters most of us are supposed to find rather than just "find", and, eventually, you're going to keep finding them dead.
They're going to die, not because of anyone else, but because of you. Just like Mia Arkada didn't die because Tyler doesn't like you, or because Raltz "The Man" Nightwing conspired against a superior, or Costa Vespula gets her jollies drilling holes in the faces of loyal Imperial officers, or anything like that. `She's dead because you pushed her forward, you tried to make her the MVP in an operation she only barely had anything to do with, and because of your assumptions and hasty actions, you put the Inquisitors in a position where they had no choice but to execute someone who had gone to such astonishing lengths to compromise the mission.
After that happened, everyone pretty much fell over themselves to give you advice, and to help you avoid it happening again. You seemed to listen to their advice, made a couple of speeches about how people in other RPGs had also despised characters you played, and then set about doing it all again.
That set of posts you made about a character playing a series of "pranks" on another one of your characters? One of the most surreal bits of RPing I've ever seen, capped off by the coup de disgrâce, an OOC comment, made by you, apparently expressing that you knew how bizarre, nonsensical, and overall just irritating that series of posts was.
But okay, fine. We all make bad posts. We do not, however, all go on to encounter freaking Heimskr of Whiterun ("What then? What do the Twi'leks take next? Your businesses? Your children? Your very l i v e s ?"), and then murder the poor old priest of Talos to prove that our characters are good people. In fact, I'm going to go out on a limb and say that you're the only person in OTC who has done that.
At first, I honestly wanted to help you get along in this game. I really did. I wouldn't have typed out actual advice on fixing what was going wrong if I didn't, and I definitely wouldn't have spent as long as I have on this scenario, trying, time and again, to make you understand why what you are doing wouldn't work, if I hadn't honestly wanted to help you fix it.
But that's gone now. You've chipped away at my patience, you've insulted my intelligence, and you've demonstrated, as clearly as possible, that you've learned nothing from what anyone has said to you, and taken no hints whatsoever from the treatment your characters have received.
And you know what? You try to push the blame off to Strider!, but at least his character had a reason for following that path. At least it was one path, rather than trying to do five things at once. Because that's the problem, even more than how far your characters move in single posts. You plop a character into a random situation, announce that they're ready for interaction, and when nobody responds within five minutes, when the rest of the RPG doesn't exist to cater to your whims, you yank the chain and toss them somewhere else, give them another scenario, and desperately hope that a new situation - look, they're rescuing an NPC they invented from another NPC they invented! - will make people more interested in a dull flesh-puppet.
Well, congratulations! One of your mad leaps drew a player to interact with your character, warm body, keyboard, the whole shebang! And what did you do with that? First you tried to run away from it as fast as your little legs would carry you, and then you dropped airborne fire support on them because instead of congratulating your character for snuffing out a civilian, they came to arrest you. They did so as civilly as they could, because that's the way their character went about things - they were, in fact, trying to avoid killing Kyra, because Strider's not as vindictive as you or I, and you responded by making the situation as difficult as possible, and then blaming a character tasked with enforcing the law for trying to bring a murderer to justice.
In summation, if you really want to avoid the deaths of your characters, stop making everybody want to kill them.