1. Tesla Cage on Blasters is not useful. It doesn't sap or damage well enough to actually use. It's only purpose remains a single-target hold, and it's worse at that than many other options available to Blasters. Making this a decently damaging attack at base level is the solution. Even Lightning Bolt level damage would make this a key attack in Electric Blast; it doesn't have to be Sentinel Tesla Cage.
2. Sapping is nice for Shock, but it actually has become worse as a defensive ability, now that things can attacking at 0 endurance. It doesn't take many guys to kill a Blaster even with their weakest attacks. This is especially a problem because sapping IO's don't come with many defensive bonuses. This is a problem. In order to sap, I have to make my Blaster less tough, and he's going to get hit more because sapping doesn't prevent damage anymore. So I'm still better off ignoring sapping IO's which undermines this entire change.