Hernandez was not much of a blocker. Perhaps true that he was better then Wright....but only marginally. Like most "WR" which lets face it in the scenario you present ("when Small run") they essentially are, you dont have to be a (old) Hooman/Gronk road grader blocker. You need to get in between the DBs and the carrier. They real question is ....is Wright a better Blocker then most of Edelman Amendola Lefell Dobson or Tyms.
I think you could argue he is better then the Vowel Brothers, and much better then Dobson and Tyms. Lefell is probably better then Wright.
It wouldnt surprise me to see a Hurry up Package of OL, Brady, Vereen, Edelman, Lefell, Wright and Gronk. With Lefells recent "dual threat" (Blocker/Catcher) ability that could be devastating offensive Grouping. When running against a Nickel you have 2 excellent blockers (Lefell and Gronk) and 2 decent blockers (Edelman and Wright) especially considering who they would be blocking (DBs). When throwing against a base defense you have 2 VG Pass catching TEs and good enough WRs who can burn Safety help on Gronk to keep the secondary honest.
I think a big part has been getting Gronk up to speed/Game Shape. You cant run the hurry up with out him. (at least not they way they did). He is the lynchpin. Essentially giving you a 6th OL able to take on the "Front 6" of a Nickel Defense (and allowing Wright to block DBs), or able to beat a LB and often require safety help when facing a Base Defense.
As Gronk gets more wind.....I think we see more Hurry up.