I don't like the idea of it, CP3 is old and it is showing, he is now prone to injuries. And it's kinda late though, I mean he was reported to be moving to Lakers with the Kobe era that was vetoed by David Stern.
Aside from being old, CP3 won't fit with the Lakers as when Lebron arrived, they were not able to acquire a good point guard because it's still Lebron who are calling the shots, you know what I mean. So, it's a bad idea, CP3 will only fit to a team that will let him play his role, and I don't see the Lakers to be that team. Also, he should not be getting a lot of minutes to prevent him from getting injured, a 2nd unit is good for him, and I'd rather want to see him in a team like the 76ers so they'll have a good point guard.
I think he can fit but the problem is that CP3 is old, that is the main reason why it is bad for the Lakers to get him at this point. Maybe 5 years ago, when Paul was still in his prime and his perimeter shot is money.
Now he is aging, and probably can't play that much minute as much as Redick might what him to be. Just unfortunate that he will retire without a ring. Point God during his prime, handles and basketball IQ is one of the best but just fell short in winning.
Though if JJ will insist and entrust him the position we never know maybe he can still bring something good for this squad, though like what the post above you, it' more on LeBron if he's willing to allow CP3 to work on their offense maybe they might fit together with AD, they already familiar with each other and if they work things out we never know what might be the outcome.
The only thing is they all are no longer at their primes, aging and injuries slow them and with the type of game system the opponents will implement that running attacks will hurt them a lot.