It's a decent cruiser, good officer layout and weapon loadout.
if you use your free ship token at Lt Gen, it's defintly worth it.
If you buy it with RL money ibn the Cstore...well...up to you if it's worth it.
I've tried it for my Klilngon engineer...It works wonderfly and is a great mirror to the Federation Star Cruiser. The fighters don't add too too much unless you want that last bit of DPS. They stack with scorpion fighters, though so you can fly a cruiser-carrier hybrid at that point.
The Marauder is a fantastic tanking ship with a ton of healing.