Do u think tripod is getting less useful nowaday? Reasons I can think of:
1. Advancement of IS/VR/AntiShake/OIS technologies which offers 3 stop advantage. Antishake on camera body is coming soon too.
2. With DSLR, noise at ISO400/800 are acceptable so can always shoot at higher speed to get sharper pic.
3. Thanks to the smaller sensor size, you are getting more DOF even at large aperture like f2.8. So you can shoot at higher shutter speed than b4.