Re: the worst unit ever
Battalia sold me on the Scarabs being one of the worst units in the game. They're beyond easy to manipulate costing the person using them to lose huge amount of TIB quickly. At least - the way most people I see use them. I also don't think they do the game any service in how they can shut down a new player - without any experience they're daunting - and with just a little experience the opponent is going to regret using them.
Chem warrior without Jade is down there - making that unit very specific to a commander.
GDI air doesn't impress me... I'd happily give them all up for a better Banshee analog. I don't know if I'd say they suck - they have uses - but in comparison to the NOD alternative it's not like any 1 of them stand up to it.