IMO base guns like the suppressor and boltshot shouldn't cost any points at all. However, I know that this will probably not happen, so I suggest making all base guns level 1 reqs. This includes the plasma rifle, as it is currently weaker than the storm rifle, but at a higher level.
Another suggestion I have is to reduce the sentinel beam from level 4 to 3. It is not as good as a rail gun or any of the other level 4 reqs, so move it to level 3 (or even 2 if you really want to).
I wouldn't listen to the people saying to move wasps from level 3 to 4, as they will get obliterated by railguns and Spartan Lasers and railguns at that level.
I forgot what level the plasma turret is at, but move that expensive to trash to level 2 so it becomes cheap trash :) Edit: or move it to level 1.
As the first few posts have stated, make all scopes available when the weapon is first unlocked. None of the scopes provide an advantage to warrant them being a level higher, and scopes like the morph site are never used because the levels are too damn high and offer no attachments.
As a side note, for WZFF, lower every weapon to at most level 4. Weapons don't provide enough damage or ammo to be effective. Vehicles are much more useful and many are at the same reqs as weapons.
We're already 6 pages into this, but I hope you guy still see my post :)
Edit: Also lower the base hydra launcher to level 4.