I hate the concept of exploring (I do not, it's an example)... Would you see me moaning against exploring mechanics? Nope.
Probably some people are ONLY going to want to do big time trading.
I don't see them talking against armed ship.
Just give people choices.
Having massive war machines where an individual can control dozens (hundreds?) of small fighters is hardly the same level as someone choosing to be a miner, a pirate, a bounty hunter, etc! It changes the game dynamic, it's not simply adding another career choice as you imply.