As long as you can't get to a magical grade 7
Wouldn't it be simpler though to just give you a discount on the purchase of missiles? Then you wouldn't have Grade 5 missiles that work like Grade 6 ones, which would be confusing. And you'd still have to pay less for them.
Yes, there is that .. or ...
Im saying that lets say for arguments sake that a player picks mechanic as his profession. Lets say that mechanics get buffs against all Drives. Lets say the top Military drive gives the player 100% manoevring buff. Lets just say we dont want the 10% mechanics buff addition to Drives simply cos some players will have 110% Drives.
Let me then counter that.
If we have "professions" aka Roles then I would agree. You chose mechanic at the start of the game whilst I chose spy. Once you "level" up in your profession you now have an advantage in-combat that I don't nor can ever have. This I agree with. Elite should be free-form that people can pick and choose what they do.
Earlier though you stated that professions could be treated akin to Guilds (which I liked as a suggestion by the way) - Now
everyone has the option to join the Engineers Guild if they want. In doing so, once you have reached a certain level, you gain this maneuvering buff that adds 10% speed. This I have no objection to.
Compare:
- running into someone who played 24/7, amassed huge amounts of credits and fitted out a top of the line fighter whilst you're in a cargo hauler, to:
- running into someone who has leveled up in the Engineers Guild whilst you have not.
Same difference - that being one of time and choice.
The distinction that should be made I feel is that any bonus, any perk, regardless of what is, should be available to everyone if they choose to join that Guild. It makes sense to me to have a military career and by the end of it you have been in active service so your weapons "hit harder" by a small degree. (Implying advanced tactical knowledge of ship design and weak points) By the same argument, the Explorers Guild over time teaches you something about traversing space so jumps are either quicker or use less fuel. The "perk" should not be game changing but enough to make a small difference.
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ETA: Incidentally, buffs for combat can have a dramatic difference for NPC combat too. Think about it - whilst out and about being a pirate you might run into some patrol scouts ... they may just be on the 1st rung of their military career and after you have dispatched them their last.

The local government responds in kind and sends out a few mid-seasoned pilots - equal match to your ship and skill. However, if you dispatch these pilots they send the Navy - a battle hardened fleet of top line military combat pilots ... not only do they have good equipment they also hit damn hard and move fast .. best be sure you're trained also or you know what you're doing
ETA: Another aspect to consider. Buffs for combat will only really have a noticeable effect in PvP. If you are on a bounty run and manage to kill someone who is trained (via the Military Guild) then your reputation should jump considerably more as the odds were against you. (Like I said though not enough to be totally unfair if you're equipped the same

)