Agree it would be nice if followers felt like they helped out more- although they are much better than early D3 days.
For DH I use scoundrel for the range, knockback from lightning-rolled windforce and use control-impairing or damage skills. Oculus, wyrdward, and Ess/Overwhelming/Haunt just whatever I find. Scoundrel easy to gear on a DH and the knockback is amazing for those fast/flying elites.
For melee toons I use templar with lightning wep, oculus, wyrdward, whatever ammy (above), and freeze of deflection. All control-impair skills (intervene, intimidate, charge, inspire for resource regen).
Sometimes I will speedfarm with enchantress and use the follower token that gives her all the skills... just for fun.