The Kieth I'm not so sure. It's a scout and a third the size of the Chandley. The rest of them are what happen when you run out of ideas. Most of them would never make it off of a Federation drawing board let alone see combat. It's comparing apples and apple wannabes. The Chandley, as I have said, is a good design. It's a very logical design for a troop transport. But design is a give and take and the Chandley design takes maneuverability.
I will agree with you on one thing. The Chandley does not, in fact, have the worst maneuverability in the fleet. That distinction belongs to the Babcock, a freighter masquerading as a frigate. Of the original FASA designs (those in the Recognition Manual) that ship has the worst shape for maneuvering. That ship, however, will never be a part of my fleet, so I'm not really worried.
So, I will amend my statement. Of the good designs from FASA, the Chandley has the worst maneuverability. The Miranda, the Enterprise and the other frigates (Babcock excluded) would fly circles around it. Maybe not the Brenton. But, as I said, of the good designs.