The only good card from Yusei SD is Synchro Fellows. It's a 1 card Speeder with new Anchorbolt/Fullspeed.

Here's a build. Sync Wave is Fellows and Speed Warrior is the new one. Fullspeed is better than Anchorbolt overall since it's a warrior and it can search the spell if needed.

Adventurer Synchron was and probably still is the only viable build for Synchrons. With an easy Speeder now, Adventurer can get you a negate (you could also try some Assault Synchron + Caligo shanenigans for Arc Light, it doesn't trigger any handtrap).

You can also run Duelist Genesis to net you Synchro Fellows, I just add Thrust because there's more targets.