The KBT video is a very bad example of that play. not well played by the NR player at all.
he was trying to win both round 1 and 2 using that, and not time the borch revive for the last round etc.
To "win" more often than to loose with that strat you need to adapt your play, sometime, demoting borch is not the right play and you need to adapt your strat.
having Gigni and demoting him can be good too.
People complain about NR "promote", but without promote, NR can't to anything against good deck. Base strength is not high as SKE or monster, not imune to weather, a lot of unit that buff other unit. but against weather or Dbomb, you can't win. now that promote doesnt change the base strength DBomb reduce gold unit to base STR to even with promote, without strat with demote / promote / rez, you can't really win. (i only count as cheese the "the other player passe let me buff to the max and AR a unit too win next round" strat. the other are just clever way of using the tools you got with this faction).
anyway, with D Shackle / chain soon NR will be unplayable at all.
As for "medic chain" with NR, i dont see how you can do that. NR medic rez at random, and cant rez each other. Only card that can is Baron, a gold card that you need to demote if you want to use it more than once a game. and it's not a "chain" as SKE that can, with one card on the last round, rez Sig + 3 medic (possibly buffed) + a 20 more str card of a 9 or 11 str card imune to fog or rain....