I think that we should be able to choose other things other than grenades.You could choose between:
1 medkit.
1 ammo box.
Grenades.
(Maybe)25+ blocks/50+ blocks
The medkit could be placed as a block,heals anyone 2 blocks away from it,2 HP per second(Maybe 3 or 5 too),for a total of 200 points of health,or used on yourself or teammate,by right-clicking,and it would heal to full health.Also,if you have one of those in your hand,you can see the health of allies if you are in distance to heal him.
You can also pick ir up to re-place it later,but you could only use it as much as you would be able to if you kept it placed.Like,if someone used 65 points from it,it could only heal more 130,not 200,if placed.Also,it would heal 60 (or 65) instead of full 100.
The ammo box would be similar:You could place it as a block so that anyone 2 blocks away could use it,or use it in yourself to get to full ammo again.
It could be able to reload 10 mags,doesnt matter which weapon,but if it reload 3 shotty mags,it could only reaload 7 smg mags.It a submachinegunner reload 2 more,a rifleman would only be able to reload 5 mags,and a total of 3 grenades.The grenades supply is independant in relation to the other ammo,so,even if 10 full mags are reloaded someone could still get the grenades.
With both the Medkit and Ammo box,you could only have 1 per time placed,and ammo box wouldnt reload blocks or other ammo box/medkits.
Alternative to Ammo Box: Sharing ammo.You would be able to press a certain button (lets say,h [It could be the same as some kind of "Call for Health" button]) to ask any teammates nearby some ammo.He would only listen to it if he have the same gun and at least 2 mags.When the guy you asked ammo comes nearby,he can give it to you 1 RIFLE MAG or 1 SMG MAG (Or maybe 15 bullets) or 6 SHOTGUN SHELLS.He would get 1 point for doing so.
Another thing:Some kind of point system different of what we have now.Right now,you get 1 point for killing someone and 10 points for capping intel.I think it should work like this:
5 points each kill(+1 point if it is the Intel Carrier.)
1 point each mag you give someone else.
1 point each 20 points of health (Maybe 25 ) someone gets from your medkit.
2 points for removing a Control Point from enemy control.
More 8 points for fully Capping a Control Point.
2 points for picking up intel (maybe more)
Other 18 points if you bring intel to the base.(Plus bring back the 60-seconds Radar)
The kill count would be displayed separate to the Points you have,so that if you want to get in a clan you need to get the required kills.
Sooooo...Comment what do you think about it,and any improvements to it.