I fly Wizzair a lot, the days of lots of new routes and lots of passengers to Eastern Europe are long gone, with Brexit they are they unlikely to return. This why I have done a £18 return fare to Krakow from Luton when Ryanair were £130 from Stn and Easyjet were £190 from Lgw.
This week Thursday - FR 3 flights from Stn to KRK (2 sold out) 2 seats remaining @ £186, Wizz - £81, Easy - £134.
Indigo partners like every PE backers will want a big payday, big question is when will they get it from Wizzair.
I don't see them doing TA anytime soon.