Times have changed, and no one is scared about Ravager + Disciple. Ravager is still good enough in Affinity, but Disciple is lackluster without Ravager.
Re: List
Cut Galvanic Blast. It's a sweet card, and it is by no means 'bad' in Affinity, but the more you play with Blast the more you will realize how little you need it in the matchups you are trying to improve (e.g. combo). Galvanic Blast is a really really good burn spell, but Affinity doesn't need Burn, (not in this metagame anyway).
Don't ever shave artifact lands, least of all Seat of the Synod. I can assume you are trying to make your manabase more resistant to extreme hate such as Energy Flux or Null Rod, but no deck you will consistently face (DTBs et al) are ever going to pack either of those two hate cards. Furthermore, you're just making the deck less consistent in general. Cut the Glimmervoids + Great Furnaces and add more artifact lands (4th Seat and 4 Vault of Whispers).
Signal Pest is such a cheap and aggressive card. I love the card, but it has horrible defense and it highlight's some of the deck's weaknesses you should try to avoid (weak toughness ->
Punishing Fire/Umezawa's Jitte/
Forked Bolt/Lots of other stuff). Signal Pest is also much better if you run 12 free guys (including Frogmite).
You need a total of 4 Tezzeret between all the cards in your MD and SB. They're much better than Disenchant against control, so take out Disenchants.
Rest in Peace is too slow, and requires white mana. Grafdigger's Cage is half the cost and an artifact, and thus much more likely to resolve or even cast against Reanimator before becoming irrelevant.
Infiltration Lens is way too conditional. BTW, you can wrap a tag (type [cards] in front of a card name and close it off with the same tag except with a backslash in front of 'Cards') that lets posters see a card's image above the card.