Powerful shotgun, weak shotgun, either way it always has the same problem which ruins it one way or the other- no real ammo consumption. With the new ammo chomping machinegun, the shotty is now the only ammo weapon left that never actually runs out of ammo.
That is/should be the laser's job- unlimited ammo but limited damage and versatility. But instead you also have this tag along shotgun weapon that either does useless damage like it seemed to in 2.4 or kicks so much ass that people complain about it being the only weapon you need in 2.3, 2.5 and 2.6, but both ways stem from the fact it never runs out of ammo.
LordHavoc wants a real shotgun that does real damage, and I think that's a great idea. But, real shotguns also use big ass shells and can't fit that many in even a drum clip. 40 rounds is insane. Just make it 8 shells and then its out, and make it just as strong and interesting a weapon as any of the others.
I would take it one step further and randomize the starting weapon so you don't always get a shotgun but instead might get a machinegun, rocket launcher or rifle. It doesn't matter as long as everyone get's something of equal effectiveness and it runs out of ammo in the first fight or two anyway (which all the weapons besides shotgun and laser currently do).