I deleted my male warlock in vanilla because I wanted to make a Titan and I deleted my male Hunter to get a good looking cloak in HoW
[spoiler]no, I didn't deleted my Hunter for stats.[/spoiler]
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I've deleted 3 or 4 I think. Within a week I deleted the first character because I didn't like how they looked. Then later I deleted character because I hated how they looked, but I have never made a Exo so I did it for the grimoire. The Exo then got deleted because they had a bad dance. I may have deleted another character early on in the game.