It is still a solid tier 3 but needs a lot of tech traps and hand traps to stay relevant in the meta, if they released steed I don't think it would be too much power creep and all that would happen is the removal of other tech traps, like floodgate or fiendish chain
RB is strong deck, IMO but not that consistent also currently their strongest monster is only at 2600 and 3100 ATK with SB apelio. They struggle against big body like BEWD, Blackwing (chidori), etc.
"Hope we get Ulti-Gaia Apelio in upcoming Zexal world. Probably its tier becomes higher and easy to handle annoying Invoked Neos and Witchcrafter." just better ban those ca ncer decks along with this rb s h it can c er
Also, if BE Spirit Dragon is on the field and Pettle(or Sin) tries removing it, Spirit can just switch to Azure, whose effect prevents Dragons from being targeted.