What change do you want to see on your main class for Endwalker ?

[Mansion]

I am a bit in between maining SMN or RDM.

SMN needs to see its pet bugs fixed. I would like something more interesting to do during its downtime in between trances. Merging Bahamut and DW Trance would be great, especially if it works like FB Trance.
Some button bloat fixes would be welcome: merging Enkindle Bahamut/Phoenix/Galvanize with Death Flare as they are all mutually exclusive; making Energy Drain cleave and thus delete Energy Siphon. (a small personal complaint, I'd rather have Foutain of Fire replace Ruin 2/4 rather than Outburst, so I can throw this spell away from my main bars)
A thing on the job gauge/spell icon so I can track my Ruin IV stacks (currently in an opener with several raid buffs, it's tedious to check how many stacks I have)

RDM seems mostly fine, I do think Embolden needs to buff all damage for the party and our own damage too (Fleche, Contre de Sixte, Corps à Corps and Displacement/Engagement not being buffed by Embolden and Manafication feels weird). I'd like Impact to be returned to its Stormblood iteration (being an upgrade to Jolt II and not needing a dedicated button, giving more importance to proc management).
I don't want any AoE addition in our kit that would take the spot for something more interesting in our single target rotation. ShB gave every job more AoE tools, but no meaningful AoE situations in high end content, and dungeons weren't harder either.

Bonus : reading CKNovel's point on Role Actions, I'd like to see something added to Casters too actually. Not having Second Wind nor Bloodbath is a bit "dangerous" in some high end content. Not having a stun / silence is niche but also unfair in some situations (I remember the add phase in E8S, in a group as a SMN with a BLM, it made it a bit more frustrating for our tank who had to take care of all the stuns)