Am I the only one who loves the asthetics of the Hecates design? It is a beautiful magestic ship. Not speaking of tehcnical blindspots or flaws.
Yes, it does look neat.
But when choosing between "good looking and efficient" and "just good looking" I'll go for the former.
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Back on the crux of the matter..If you compare the Hecate to the Orion..
Both have 1 fighterbay (bad). The Hecate one is a bit harder to get to and take out.
The Hecate has multiple engines, making it difficult to disable (realisticly...it gets disabled far too easily in the campaign)
The Hacate has superior AA defenses ,but it's shape prevents it for using it efficiently.
The Orion has inferior AA defenses, despite a shape that would benefit the most from them.
Orion fighter capacity: 120
Hecate fighter capacity: 150
Orion beam power - 3 BGreen, 3 Slash
Hecate Beam power - 1 BGreen, 4 Slash
Clearly, the Hecate was not designed to stay and fight, but to escape. Many engines testify to that. The rear beam is useless, so the most firepower is can hope to bring to bear is 1 BGreen and 2 Slashers, something it's rarely even capable of doing.
Theorethicly, it should last longer than the Orion against fighter/bomber attacks, but even it's 30 extra fighters don't compensate for it's lack of a powerful alpha strike. Quite simply, it's not meant to stay in combat or go into it, unless absolutely necessary.
I see it more as a mobile command center than an actual warship.