We don’t need new civs. We need fixes. It is pretty terrible that the Devs still dont have fixed the TG ratings, which are terrible since release for example (see Analyses of the ratings - Spotting the issues). Things like this should get more priority compared to new civs.
Getting good new civ designs is also difficult. Most new civs are badly designed. They are a copy game play wise of an existing civ or they use gimmicks to make the civ unique. Both aren’t great designs.