How do you think Sacred/Relic weapons will work in this game?

[Fabulously Olivier]

Personally, I'm thinking that sacred/relic weapons will be freely usable, with penalties for not having the matching crest or crest stone. Sacred Weapons could not offer their healing and other bonuses without the crest. Hero Relics could degenerate health over time (like Vengeance in FEW1) and not offer their combat art without the crest. I think Crest Stones will be mission rewards.

 

My reasoning is simple. It's the best implementation for the flexible class system they're going for.

[Metal Flash]

I more or less agree with what you said, with the class system they have, locking the relics to just one character seems pretty pointless. Aside from Shez of course (and Byleth if they ever obtain the SotC in the game).

[tipperthescales]

Honestly I feel like Relics will follow FEW Prf rules (though DoT for incompatible wielders would be accurate, given that a) there's no current indication you can change weapon, b) the upkeep required - i.e. maximal vulnerary stacking + healbot support would be incredibly detracting from the mission, and possibly c. newcomers will go 'why did my unit die after 2 minutes?', I think the negatives outweigh the positives here).

Sacred Weapons I think generally should be as per FE3H, though I'd feel like they'd keep Labraunda Edelgard locked despite there being no other reason to otherwise. Maybe for gameplay / 'balance' purposes the renewal effect on sacred weapons requires other conditions (as Olivier mentioned, or possibly lock it behind weapon rank if that is a thing)? I'd be inclined

Crest Stones I'd need to see if there's story relevance for them, but otherwise yes mission rewards (probably more for side missions though).

[Armchair General]

I'm assuming that the Heroes' Relics will be permanently assigned to certain characters.As for  the sacred ones, it'll be hard to say, given how anyone can use them; but they might wind up just giving an character and completely different moveset like they did in Hyrule Warriors.