Hopeling

So from that quote, it's not clear if they created the prison themselves, or if it was already there.

Probably something to do with having to make twice as many animations to make them work both ways. SCR, etc etc, and I'm guessing most players don't deeply care if their character is right- or left-handed.
Making the attacks do different damage based on the costume piece chosen is very likely not possible. The reasoning presented is that once you've got a weapon that big, it does damage mostly by crushing anyway. Doesn't matter a lot if it cuts as well.
A lethal dot basically means bleeding, but a smashing dot doesn't make as much sense unless there's something continually crushing them, anyway, like Gravity's powers do. But really, it's probably mostly the technical limitations.
Arc of Destruction is Head Splitter, except faster and six times as wide. I'm not sure it's really reasonable to ask for even more
You seem to be forgetting that Footstomp already has an extra-large radius, so just being the same as Footstomp still makes it larger than almost any other melee aoe. It does barely less damage, and part of that damage is DoT, true. On the other hand, it casts in half the time, and has a 14s recharge instead of 20s. I'm gonna have to say TW comes out ahead on this one.
Haven't noticed this one personally.
Totally agree. Some better sound effects and/or screen shake would be nice, also.

I hope this helps, glad to hear you like the set

Unfortunately, according to other posts I've read, adding more sections to the costume creator is difficult, and there's a limit on the number of "anchor points" that a costume can have, and we have already used most of that limit, so adding much more would at least require a large revamp of the system. SCR etc etc
However, note that the OP went out of his way to say that horns should be ADDED to the ear category, but NOT removed from their current category, so you can put horns in either (or both) places. No options would be removed.

This would be a nice change, there have been a few times I've wanted to use horns and something else together but couldn't.

Interestingly, TW actually has no redraw during Momentum. So you can use Burn and go back to your weapon attacks with no penalty, if you use Burn at the start of your Momentum cycle instead of the end.

However, I still would favor /DA on a scrapper, because enemies run from a /FA scrapper's Burn, since they don't have a taunt aura. If this were a Brute it might be more of a toss-up.

Edit: Wow, why did I think this post was about TW? Facepalm @ me

I don't see how checking the store at 12:01am Tuesday morning to see what the new item for the week is, and then buying it when you see that it's a highly-anticipated item that no one knew the release date for, can be even put in the same category as an exploit. Yeah, the devs could've deleted or locked their characters, I guess, but there was no real need to, especially since it was only 12 people.

You can't transfer a character, but you can certainly transfer their costume. You can save a costume on beta, and copy the costume file into your live costume folder, and then load it on live (or vice versa to get a live costume on beta, in the absence of the copy tool). I've done so a few times.

Since I'm the one who put this little chart out there in the first place, I should point out that I now know it's partially wrong. Here's the correction from later in that other thread:
So Defensive Sweep, Crushing Blow, and Titan Sweep are even faster than I had thought.

If you fight only non-Trial enemies that don't have tohit buffs or def debuffs, and don't target any holes in your defense, yeah. Adding in any (or all!) of those things will move the break-even point closer to the resist side. In actual play, I've found that softcapped def alone really doesn't compare too favorably to moderate def and moderate resist. Especially because a character with def in the 30s can use one small purple to softcap, but a softcapped character needs several oranges to get decent resists. A tray full of purples lasts 20 minutes if you only need to use one at a time, even if you don't get any insp drops at all.

I'm... not at all sure I agree with your design philosophy here, since plenty of people have played Fire Melee since forever despite it having zero knockdown or mitigation of any kind except damage. Also, fast/fluid powers can still be heavy hitters (see: War Mace/Clobber, Stone Melee/Seismic Smash, Titan Weapons in general, Fire Blast/Blaze for a non-melee example).

Personally, for "do I want to play this" I rate the 3 sets you chose at:
Titan Weapons: 10 (maybe I'll feel differently in a month when the novelty wears off, but for now, I'm totally loving this set)
Dual Blades: 8
Chain Link Melee: Maybe 5?
Hard to compare a hypothetical set with only descriptions to existing sets that I've played, but even just on concept, huge devastating weapons, or nimble paired blades is more appealing to me than swinging a chain.

Kind of a minor nitpick, but there is no such thing as mag 2 knockdown. Knockdown is just knockback with a magnitude less than 1. A mag .6 or .8 stun or immobilize won't affect even a minion. Mezzes are generally mag 2 ("only minions"), mag 3 ("minions and Lts"), or mag 4 ("minions/Lts/bosses"), with mag 3 being the most common.

If the set's supposed to be able to represent things besides chains composed of metal links, call it something other than Chain Link Melee

Lastly, this really, really belongs in the Suggestion forum.