They didn't say Syndra needed too much work, they just said that if they were going to work on her it'd probably be either a big rework to see what they could do to perfect her or it'd be really small work (i.e. standard patch change) because her current issues are not major.
Syndra's kit is pretty much fine, it's not perfect but doesn't have many problems outside of a passive somewhat lacking satisfaction (this is something a small update can deal with). She's weak but not poorly designed, and buffs would deal with that. Dunno why people keep asking for a Syndra rework with the justification that she's weak. Weak champions get buffs, not reworks.