Given Move Forward Party leader Pita's uncle is a close advisor to Thaksin, this merger should go smoothly. Quote Wiki: He is the nephew of Padung Limjaroenrat, a former secretary to the Interior Minister and a close aide of then Prime Minister Thaksin Shinawatra.
As far as will he be better than the General? Likely, as long as he doesn't make returning Thaksin a top priority or doing like Thaksin did, appointing family members as head of Army and Police.
A bit more background on Pita aka Tim: “New-generation politicians have to hit their wives, forbid them from befriending gay men and tomboys, and place them under a curfew after six,” reads Parina’s post. https://www.khaosodenglish.com/politics/2019/07/30/parina-slams-future-forward-mps-separation-with-series-of-commandments/