If Valve makes an easily viable way for the medic to be a "battle medic," pub servers will go even further downhill. There's already too many "battle medics" as it is. Medic = healing. The medic should rarely use the needle gun, save retreating and as a last resort to stay alive.
Or Spies sneaking up on their patient.
I've always wanted a melee weapon for the medic that acts as a legit syringe, instead of just looking like one.
For example, every time you would hit an enemy with the syringe, it drains 25 health from them. and with that 25 health, it fills up 25% of the syringe. You can have 100 health into the syringe at once pretty much. Now if you hit an ally with that syringe, it gives them the 25 health. Now it seems kind of useless since the medic already has a medigun, but if valve ever really does decide to make the medic more of an offense class, this would be usefull leaving the secondary slot to be used by something else.
A medics primary weapons are his team mates.
.^ The blutsauger is an insanely powerful weapon if you know how to use it...I can usually take down most classes with the blutsauger if they're by themselves and not within melee range (I've even been able to blutsauger heavies)
There is the coined term of "battle medic." If there will be a new primary weapon for the medic, it will be one that reduces support capabilities and increases offensive abilities. So far... I have no ideas. Giving the medic a rifle is too far-fetched in my opinion.
All i know, if you know how to use blutsauger. . you can kill 1v1 solider without any problems, also good if you are running away you just shoot and get hp <3