I suspect like mentioned previously this is an alliance for one seat. Long term i don't see a future.
1. PTI is relatively liberal, and TLP is conservative Islamist.
2. Khadim Rizvi for his flaws had the gift of leadership qualities. His son seems like an imposter to me. We'll see, I'm not a follower of TLP but I did listen to the religious bayyan ot Khadim Rizvi (never really agreed with all his politics). All of his sons videos i've seen seem wierd. He's copying his gestures and mannerism, he's copying his style of speaking, he's over using the echo on the loudspeakers - i can't even understand what he says. It remains to be seen if TLP will be more than a 1 election wonder.
The wider question remains about who is presenting working class, religiously conservative people of Pakistan? This is a huge vote bank in our country and it's currently being failed.