Overall, a solid puzzle with a several areas of satisfying obfuscation. We start off with a nice stack of tens in the north west corner - natural answers that are well clued without being totally obvious - at least to me. In fact, the 3D/19A cross, was a Natick for me, thus the Assist. I ran into Horace at the bus stop after work and he supplied the missing P. I'm unfamiliar with Mr. TAPPER, not being a CNN watcher, nor did I know that Baht was the currency of Thailand. Even if I had known that, there was the additional problem of not knowing that KIP is the Laotian analogue of Baht. Also in that neck of the woods, OLEO stumped me for a long time - possibly because I am about as conversant with margarines as I am with CNN. I quite enjoyed 28A. End of a letter (SERIF). Other clues of note in that section were 8D. Spreads out in a park? (PICNICS) and 9D. Euro forerunner (ECU) - kicking it old school.
I got right into the north east thanks to esteemed puzzle reviewer Colum Amory's children with whom I once watched the YouTube video "Actual Cannibal Shia LABEOUF" several times. 13D. Cayenne's hotter cousin (HABANERO) was no match for me.
I was able to get a toe hold in the south east with NIL and DOLOOP. I am not a big fan of ETERNE, bu the triple tens in that corner were all solid. I know Horace dropped in GAMETHEORY in 61A. I'm guessing Huygens and Mr. Amory did as well. Going door to door? as a clue for SIDESWIPED (67A) was a nice twist.
I was stuck in the south west for a long time with nothing but ATIT and ARTS, and I was sure ARTS couldn't be correct because the clue mentioned both mime and puppetry. Kidding! You'd think that 55A. The house of Versace? (LACASA) would have been a gimmie for me, but I overlooked the 'The' to my almost eternal detriment. I am sorry to say I've never heard of 2015 Literature Nobelist Alexievich. SVETLANA was a guess that fortunately turned out to be correct. I thought 64A. Narrow margin (NOSE) was good.
DUMPSTERFIRE cut a nice figure through the middle of the grid.