@SeriPSO2 Okay, it doesn't kill the purpose of soul/factor receptor, but the compound capsules allow you to skip using them if you wanted to. Example (well provided you have enough funds), why make astral soul with a darkness soul and 4 factor catalyst when you can just use add: ability astral soul? I think soul receptor and factor receptor should have sufficient time in the game before those compound capsules are released. You should be able to put these on the same unit well in advance before you can just get a add: ability for them. As someone who liked augmenting, not having soul/factor receptor units by now really worry me.
Let me ask this first, have you been or currently playing JP since TPD release? If so, that would answer why making Astral soul, or any other compound affixes is still relevant.
Compound capsules' were intended for min-maxing and endgame builds, which was why it was introduced recently in JP as the entire affix process on JP revolves around ability pass transfers for min-max super unit builds. While I consider those capsules a bit over the top because it makes more of a powercreep, it's not also something that's too big because of the potential stats of an endgame player on JP requires a lot attack to make it show a noticeable difference in dps as compared to EN since 30 attack is worth much more there than on JP.
So to say that compound affix capsules can make a player skip, which isn't technically true. It also wouldn't make much sense to give the EN playerbase access to powerful affixes when it's not receptors aren't here yet.
What if they never add them in game? We don't have (and won't have) pso2 es. They've added stuff from pso2 es already. Where are they going to put these units if at all?
EN never had es yet weaponoid series and weaponoid boosters available to for players very early. So there will be ways to insert the unit fodders else where, even as drop, exchange or whatever. There's numerous options PSOCrew can easily insert receptors into but like I mentioned before, current content doesn't warrant a need to have receptors atm when the current gears/ssa/affix/stats has surpassed what is needed to clear them efficiently.
Emphasizing what weapon upgrades: Almost none, which is the point. If you got a nemesis or slave you were set all the way until episode 5. Those weapons being available screwed up the balance. One had no reason to get much else. I'm trying to say they don't care about balance, and that example was to show it. They could have added in some comparable to items to nemesis and slave earlier (like they could have let invade drop from pd), or let Ares drop on the release of ultimate amdusia. They had the option to also add new NT items to the game (there are plenty of OT items that don't have a NT version).
They also gave us/allowed us to doom break III early. They didn't change laplace's augment drops to their "old" version to when he was originally around.
You have to understand that: One, EN is having contents flooded to them in batches. Two, the way the dev team has set up things that would prepare players for what's coming next and also, provide a safety net for their content so that it would also challenge them.
That is why there's no reason to release NT weapons when people aren't going to even use them and it would be wasted effort to start with because the team has both EN and JP to work on. As to why Nem/Slave were available early on may have been due to providing players a means to run UQ (ultimate quests), and using Nem/Slave as the current endgame weapon grind until Austere/Atlas becomes a thing. The reason you didn't see Invade was that it is a PD-only drop, and it wouldn't make any sense to have it available until the EQ actually went live. Ares is a 14* weapon, and it wouldn't make sense to add a 14* early if we're talking about the beginning of PC release, especially when Ares have SSA SAF and all.
The PSOCrew has foresight in how they expect the players will progress throughout the game until the next episode which they learned from how JP had progress, but now it's just at a very fast pace and QoL fixes. EN has 2~4 years of contents being squeezed into a time frame of approximately 2-3 months per episode. So that at least should make you see why certain things may have been set up the way they are and also feel lacking. Their roadmap and what has been released aren't perfect but it does work very well.
Only thing so far they've released that left me to question were Ability Transfer Passes which was far too early for EN to work with and on top of the fact that it was intended for (EP 6) end game progression. But you could say that ability passes were marketing driven as it gave people who knows how to use it a reason to spend real money and use noble/elegant/grace capsules to get more stats.
EN is still quite early and there's no need to actually panic because you haven't seen soul/factor receptors yet because like mentioned again, you don't really have an actual need to utilize them yet, because your stat exceeds the lowest denominator stat to clear contents in an exceptional time.