SO in 9th edition the Vanguard vets were jump pack veterans that had several weapon options for their melee. My favorites were the lightning claws and the thunder hammers with storm shields.
Then 10th edition dropped and they got 1 mediocre weapon option and like 10 mediocre pistol options.
They gained lethal hits on their profile but for the most part they were just fast moving trash units that cost way too many points to field.
Now they are pretty much the exact same kit as the assault intercessors with jump pack. Unless they add in their old weapon options this is still going to be a terrible unit option.
GW is just releasing the same models and saying to paint their heads a different color. Completely lazy trash.