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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In year 1 I had two warlocks and a hunter. when TTK was released and the whole 7-11 thing, I deleted warlock #2 and got my Titan right up to level 20. I never wanted to do the grind again, but doing the first missions as level 20 instead of level 1 made it so much easier and quicker.