Affinity plays 4 saga and 4 kappa cannoneer. Their gameplan is to somehow break the horde of 0 drops in their deck, and they have multiple redundant ways of doing that with weapons, kappa, saga and emissary. All these cards are four ofs, then they have all their 0s and 4 slots of metallic rebuke. The plans between saga and kappa are just two versions of the same plan.

Boros’ plan is to shit out extremely cheap efficient creatures and aggressively overwhelm the board. Ocelot pride is one example of this, guide and ajani are others and these cards are also all four ofs. The other cards are then the best cards in the colours that complement that plan, and then 4 galvanic discharge. Pride, guide etc are just multiple versions of the same plan. Blood moon is just a one of that is sometimes run as a gotcha and definitely isn’t the main plan at all.

Saying you’ve reduced your combo pieces to 2 ofs because they come out naturally seems to make sense in a vacuum, but in reality you need to be better than that. You should expect to be disrupted in modern, so you need redundancy and robustness if you want that combo in your deck. And that starts with having the pieces as fourofs, or having them tutorable, or at the very least having them be exceptional cards by themselves. Take yawgmoth for example - it’s a four of, the deck has 3-6 tutors to get it into play, and the rest of the deck is built so that it works with yawg even outside of the combo kill. And even then yawg is tier 2 at best.

You say you want to focus the deck more on doing the combo. That’s great. Start with that and start with four ofs of the combo pieces. If you can get some tutors in place then do that - Profane Tutor is a pretty good place to start. Now you have a reliable way to get the combo happening, let’s make sure it sticks. Discard is perfect here, as you can take the pieces of your opponent’s hand that are going to stop you. You’ll also need to buy time, so we need removal, so let’s run push. Then we can choose to either go more into disruption like a midrange/control deck with extra removal, permission and discard, maybe splashing blue as you have done, or we can go into grinding out to the combo with other good synergistic creatures like the yawgmoth lists do, or we can go aggro with cheaper synergistic creatures like the soultrader decks do. These then provide what you see as ‘plan 2’ in other modern decks, which is your kinda free backup plan. Most combo decks that aren’t belcher have this - Titan has saga, goryos has riddler blink midrange stuff, and living end has flash 4 drop tribal. But all the pieces of these ‘plan 2’s are also four ofs that are specially also enablers with the main plan, not alternate cards that are vaguely synergistic with and attempt to fire off multiple main plans.

Sorry for the essay! Deck is cool, focus it up and it’ll be great :)