I don't think you should plan your equipment around a UV of gremlin: Low. That is not much of an advantage over no UV. If I were upgrading that item, I would certainly uncheck the UV, trying to get a better one. (I'm not trying to insult you. I'm just trying to give you an idea that better things are in your future.)

Focusing on elemental swords is a fine idea, if kats give you trouble. I agree that they are some of the hardest monsters. Have you read the explicit comparison between Combuster and Glacius in my sword guide? Combuster often just kills the enemy in one charge. Thus your argument for Glacius is not very compelling --- a dead monster is better than a frozen one. But they're both fine swords, so use what you like.

By the way, according to the customs of these forums, you are bumping your thread a bit too much. Your thread is still on the first page of the forum. Give people a chance to respond.

I don't really agree with some of your statements, but it doesn't really matter. You'll be fine. Have fun.

Glacius's charge attack is basically like supernova at range, however, it's a bad idea to take TWO normal weapons because you won't be good against ANYTHING

Therefore, if Supernova is for range and knockback, I suggest BTB or Grand Flourish. One covers the other's weaknesses, more or less.

Before anyone rips you apart for your somewhat flawed understanding of the game mechanics.

2 typed weapons will deal effective damage against 4 family types and neutral damage against 2. A typed weapon deals just as much base damage as its normal type counterpart. This means that with an elemental/piercing weapon setup, you would use piercing on gremlins and elemental on slimes. Everything else has a weakness to the weapons.

On the other hand, your 2 normal type will deal neutral damage to all 6 families. I suppose the benefit of this is that you don't have to remember to switch weapons.

I'd use a heavy sword, like WRH or DA...I do this with polaris.

But then you have a problem that both of your weapons are elemental. Unless you're in a specific locale (e.g. Firestorm Citadel) where that's okay, it's probably not okay. You'll be bad against gremlins and beasts, and not great against fiends and slimes either. As Demonicsothe pointed out, you really want to have two non-normal damage types (piercing, elemental, shadow), to maximize your overall damage against monsters. On the other hand, Skykillerthefirst's preference for two normal weapons is okay, for those players who value flexibility (using either weapon against any monster) over damage output.

Supernova has two advantages over Polaris:

1. Supernova has higher base damage. It's not an enormous amount, but Polaris has the damage of Nova Driver where Supernova has the damage of Iron Slug. It's mitigated by the fact that the damage is normal-typed (and that Iron Slug is underpowered anyways, especially compared to Supernova), but fact remains that 4 out of 6 families, Supernova will be stronger.
2. Supernova has no shock. Shock is a nice status in PvP and under controlled circumstances like when using VT or EV, but for general PvE Pulsar use the status is self-defeating and will mess up your knockback. If the Pulsars are brooms, Supernova is a fine, solid, all-around broom while Polaris is a leaf blower with a half-broken cable that keeps turning itself off at random intervals.

To pair with Supernova, you could use something like Sudaruska. The two weapons will be able to push back anything within combat range for you between them; Suda against close things and Supernova against far things.