You know what would a good buff for Link be? A bomb buff. Yeah, a bomb buff even if it sounds crazy. Specifically, a faster bomb pull (20 frames would be optimal) and the ability to drop a bomb while in hitstun (this can be extended to all items but it would be particularly efficient with bombs). In fact, while the faster bomb pull is obvious, the ability to drop bomb while in hitstun can make us high tier or even top tier because dropping a bomb while in hitstun means we can stop all followups from throws for example and in a metagame where shield is so strong this would be HUUUUUGE. With these buffs Link can be a strong character while still being projectile based and even different from other zoning characters since our concept would be "very good with a bomb in hand in neutral, advantage and disadvantage (neutral we have strong conditioning, zoning and punish out of shield, advantage we have combos out of a bomb hit and very good juggles) but sucks without it" which in a certain sense is already the way you should play Link but made waaaay better.
Oh but wait, Sakurai doesn't care about competitive