The elf looks pretty good in the Dalish scout armour but you can also craft other armour sets that reduce the skinny affect. Also ditch the beige suit as soon as you can and substitute something else because that really doesn't do you any favours. I was quite happy with my elf in the end but then I either play a mage or a rogue, so the lithe look goes with those classes, plus when my video card updated the program optimised it with my games and for some reason this resulted in a slightly broader looking elf. It was a subtle difference but it was noticeable how it improved the look. If you prefer playing a warrior then I can see why people might find the male elf body form incongruous.
Mind you I think it is a shame that there is only a one size fits all for all the races and classes. May be next time they can give us a choice between two body types for each race, so not all humans and dwarves are the same stocky shape, not all elves are skinny and not all qunari totally muscle bound. I know the latter are purpose bred by the Tamassrans but even so, you'd think there would be some variety, plus those who have been Vashoth for more than one generation might show more differences.