Are you seriously telling me you're not happy with it because the kind of ships it shares this ability with are not alike enough?
The Astral, the Gemini and the Apogee are nothing alike either, yet they all share a drone system, is that not right either?
The Sunder, Aurora, and Odyssey are also quite different ships with the same system, is that not weird to you?
1)Yes, in a sense(If by "not happy" you mean curious, and by "not alike enough" you mean "So drastically different and antiquated when compared to the Tempest it's strange")
It stands out as a significantly different ship when compared to the rest of the ships with the system; what would happen lore-wise at the end of the Expansion epoch that would require a new advanced attack frigate to employ systems touted previously by only the slow, meek, and/or unshielded transports of (Presumably) bygone epochs?
2)Highly variable Drone systems.
The Astral is a Technologically advanced carrier and features
heavily automated systems, but remains vulnerable due to size, speed, and weak armor; Advanced point defense drones make sense, though other systems such as engine or shield boosts would have also been quite viable.
The Apogee, while it doesn't share much similarity with any other ships, save maybe in colour with the Shuttle, Gemini and Oddyssey and stats with the Aurora, is fitted to provide 360 shield coverage, has powerful shields, and strong engines, fitted with long range scanners, and is 'perfect for long-range exploration of hostile space'- It seems like a very paranoid ship, sensor drones suit it(that the sensor drones are equipped with Ion cannons is also suspicious, like it was designed for trying to capture some new and fairly unknown hostile.). That in this day and age it's quite useful for tech mining doesn't hurt too much either.
I don't find that the Gemini having PD Drones is too strange, but I don't have too much of reference point; It was likely made during a time of some prosperity or intense trading considering the modular, quick releasing nature of its 'Cargo bay'; the lack of energy weapons but advanced shield indicates it might be an early-Midtech design; The Codex speculates about its flight deck being used for Mining drone repairs, but I'd guess it was used by Broadswords, Warthogs and Talons escorting the Gemini, and the PD Drones would only support that it was indeed equipped to deal with hostiles, likely Pirates.(That Codex entry about mining drone repair sure does have me wondering though...)
3)The Sunder, Aurora and Odyssey are all fairly heavily invested in the use of energy weapons so it's not weird to me.(I was also going to make connections here between the Sunder, Tempest(Both 'Expansion Epoch'), and later High-tech class hull structures, possible design connections, but I lost myself, and so I'll leave it at that.)
PD targets flares, yeah. Flares don't target other flares
Ah, seems I phrased that incorrectly - actually, it might be better if I asked it like this: Will Flares act like Asteroids and bump off(Or 'explode' on) each other and ships, or will they act like Fighters and fly through each other and ships?