I didn't use the Talon much at first and therefore didn't altogether care for it, then I slapped it on the AIU to complete points for Outsider Mastery, and it was a thing of beauty. I'm thinking about using it on the Fury once I give her another go. It's like a mini Wraith that you can mod for added power damage, so I'd really like to try it on some biotics. 
I guess I'm not sure what's not to like about the Talon. Here is a list of great things about the Talon:
1. Can hold a +40% damage barrel, a magazine extension, a melee mod, and/or a power amp
2. Can OSK a lot of enemies on Gold, even on a power-based class without any ammo equipped
3. Can strip the shield/barrier from most Gold enemies in one body shot, and it actually does almost the exact same shield/barrier damage per shot as the Wraith (with 40% barrel on the Talon and 25% barrel on the Wraith)
4. Suffers less from armor DR than normal shotguns, and Pistol piercing mod has better penetration distance than the Shotgun piercing mods
5. Has a decent-sized magazine and good fire rate
6. Doesn't require you to use a Shotgun Rail Amp
7. You can use ADS and/or hard cover to increase your accuracy quite a lot
8. Weighs only 0.6, so you can literally use it on any class and never worry about cooldowns