Honestly, I like the fast and loose approach of 5E. Want a goblin wizard? Use the goblin boss profile and add a couple of levels of spellcasting ability. Or use the mage NPC and make it size small with 25' movement. Orc paladin could be the Eye of Gruumsh with plate mail and paladin spells swapped in for the cleric ones or the knight NPC with the aggressive trait and darkvision. Personally I find that once you have a feel for how 5E plays modifying a creature ad hoc takes less time than adding a formal template does (granted I have not used software gaming tools, but considering there is nothing for 5E yet that is a bit of a moot point).
Sure more monsters would be better than fewer and an NPC codex like Pathfinder has would be a nice resource but I prefer adjusting creatures according to my sense of what is needed for an encounter rather than the dictates of some preset template.