I think elemental weapons would be alot better looking if say a sword with increased fire dmg has some fire on it and a weapon with wind has some kind of faint wind aura on it.

If they remake classes spells like enfire,enaero,enbliz could set a weapon a blaze, have frost particles or have a wind effect on it, honestly I feel they could use it to enhance the effects alot. Honestly that is what they where doing in XI just didn't have the animation for it.

They just need to make it minimal, I think everyone reading this is directly thinking of WoW and Aion which was tacky as all get out with every peice of rare gear making you look like a Christmas tree. I think if they done it and kept with the current feel of the game and stuff it would work out fairly well.