Whats the problem - it takes a decision out of the refs hands. Lightens his load.
The reason I want the no tackle count restart on charge down recovery ("NTCROCDR") rule brought in is to encourage more charge down attempts (currently there is too great a risk that it will just give the kicking team a repeat set). Charge downs are an exciting break up to the ebb and flow of the game. It is a player making a play (rather than a ref changing the momentum with a penalty which is currently the most likely change of momentum). It also means the kicker is generally under a lot more pressure.
For me any new rule has to carefully pass the "player/coach exploitation test" which I don't see how yours does.
How many times does a team run it on the last, the winger runs out of room and basically kicks it right back into a defender for it to bounce out of touch? What happens then? The kicking team immediately get a new tackle? And you can't say that it's up to the ref to decide because the whole idea of your new rule is to remove decisions from them - lighten the load.
Charge downs are the same, the refs often get it wrong in regards to when a ball is charged down/played at and just kicked into a defender who can't get out the way. Why should a team automatically get a new tackle/second go at it if the ball comes back to them? Ref can't make a decision on it because lightening the load.
As for the intercept, players knock down the ball when tackling all the time because someone in the defensive line f**ked up and caused an overlap. Why reward them with less defensive work? In a situation where there's a normal interception, the defender should learn to catch. Why reward him for channelling his inner SKD?
Smart players/coaches would exploit the hell out of this rule if there was no element of "the defender has to have played at it" and that is and will always require the referee to make a decision. So in this instance the load just can't be lightened. The refs have to accept that they will continue to carry a full load.