Difficulties finding the right look
I think the two toes on the Asura’s feet are supposed to clip through their shoes like that. In Guild Wars 1, the Asura did not wear shoes. And if you actually look at a fair number of the Asura living in Rata Sum, they do not have shoes on.
The point being that the Asura’s feet are not designed the same way as a human’s or even a Charr’s feet are. Therefore their shoes have to have certain aesthetic differences from those races. Namely they have to have 2 holes in them to allow for the Asura’s two pronged toes. The Asura’s feet are very similar in design to Yoda’s feet afterall, and he never wore shoes that I could tell.
As for the Ears, same issue with them happens. Their heads are not exactly designed to wear helmets. I personally disable most helmets for the Asura due to the fact that most helmets are not really designed with the Asura in mind. Though there are a few that are. For example the Cultural Tier 3 Helmet, the Magitech Helmet from the Cash Shop, etc…
Not sure what you mean about the right arm and the pvp locker as I have yet to look into those things, so I will take your word for them.
Ranger 80 | Elementalist 30 | Guardian 29 | Necromancer 21
You could go with the Aetherblade boots. As seen in the attachment, they appear as fairly regular shoes with none of the toes clipping through. It is pricey at 800 gems for the set, but if you have no plans to use the boots elsewhere you could just use the rest of it on another character.