2 melee 2 ranged standard

[W00by]

This is wrong. Blatantly wrong. Please, stop spreading misinformation, Valence.

Thank you.

The sheer amount of instant casts has absolutely nothing to do with whether or not they are actually useful instant casts. Pictomancer's instant casts are flexible and paired with a powerful mobility tool. The Holy in Whites and the Comet in Blacks can be spent almost anywhere (unless you are saving Comet for burst). The odd-minute hammer combos can similarly be spent anywhere you want, and you can even move the even minute ones out of burst if you really need to. You ignore the existence of Swiftcast, and that Swiftcast + Motif is a really, really strong tool, looking only at "textbook" instant casts that are always instant cast. Because these tools can be spent anywhere, they are stronger as mobility options than RDM's. Let's talk for a minute about the RDM tools that you discussed:

Melee combos for RDM are not always useful mobility tools. Two of them should always be spent in burst (and one of them absolutely MUST thanks to Manafication), so if the mechanics aren't falling under two minutes, RDM has less melee combos to use for mobility. There is also the restriction of melee access for the melee part of the combo to begin with, which is not necessarily very strict, but still a sizable movement restriction. As someone who has been raiding on RDM for years, the melee restriction occasionally does gatekeep you from accessing your combo and shouldn't be ignored (like in P10S or M2, recently). Similarly, Acceleration and Swiftcast are often used for DPS to prevent Fleche drift and cannot always be saved for mobility. You have to spend a Swiftcast in opener to prevent Contre Sixte from drifting, for example, so if you needed Swiftcast at the beginning of the fight, you either have to drift or do a different opener.

RDM's "Holy in White" is Enchanted Reprise, which is a strict and massive DPS loss that delays future melee combos. In comparison, Holy in White -- while a slight loss over the Aetherhues combo, which generates more Retractive Palette gauge -- isn't actively spending your resource, it's just slightly less potency if you would lose a CYM combo in the fight by using it. You can't use Enchanted Reprise nearly as freely.

Obviously, Dualcast gives RDM access to a lot of instant casts, but the majority of these instant casts come at entirely useless times you weren't moving anyways (most of a fight). When you're dualcasting DURING a mechanic, it's about as prohibitive as any other caster (except 0 resource BLM) and must be planned around, which, again, is harder because RDM's mobility tools have other movement or potency restrictions. There was a time that RDM was considered the least mobile caster despite Dualcast because the other casters had better access to mobility options. That time was Stormblood, and in UWU, there were certain mechanics RDM just had to drop uptime to do.

You've done your due diligence by looking at the amount of instant casts, but what you've failed to do is think about where these instant casts can be placed. Melee combos have movement and burst restrictions, Acceleration has to be used for your rotation and isn't strictly used for damage, and Dualcast itself is extremely unflexible and must be planned around in advance, and most of the instant casts you receive from it are hardly being used for mobility. Also, if we're going to compare oGCDs too, Smudge gives Picto tons of flexibility while RDM's Engagement and Corps-a-Corps offer even more movement restrictions, needing to be used in melee range or when a gap closer wouldn't kill you, respectively. RDM is hardly the beacon of mobility detractors think it is.

Since PCT's are more flexible, then there is certainly an argument that in some situations, PCT is more mobile than BLM or RDM. Of course, I think they're all at similar levels of (extremely high) mobility, and that movement restrictions for casters can almost entirely be mitigated by proactive planning and play.

You're going to do your favorite move and look at my profile to see if I'm some top parsing Picto, so I'll go ahead and add my sources here: my friend and raid teammate, Kurkee Brakzz, who is a pink- and orange-parsing Picto, helped me formulate this post and compare my RDM experiences with his Picto experiences. Therefore, please engage with the content of my argument to disprove me.