Happy valentine, even robots have feelings, so should you. The new supports for Machina making it interesting to play and experiment. This deck focusing on the control aspect of the archetype while having big beaters. Not only Inspector Boarder is a great stun/floodgate (whatever the term is), it also fulfills the requirement of Machina Overdrive to summon other Machina from deck, notably Machina Citadel (or Colonel).
No more explanation needed as it is a backrow heavy control deck with typical set 5 pass, but there is some interaction that you need to pay attention to. You can summon Machina Fortress from hand/GY even if you have Boarder face-up, Machina Overdrive can both use Boarder as fodder or recycle it from GY/banished, Machina Air Raider and Irradiator cant summon monster with higher level than the fodder they used (cant summon Citadel if theyre using themselves as fodder), also both cant be summoned while Boarder is face-up, Machina Reformation best target is Irradiator + Megaform as it can fetch Citadel from deck (doesnt draw, so it goes well with Extravagance).