Lisa deserved better and its bullshit that YG uses her as an ATM the most considering the bullshit she's been through at their hands. Her being popular isn't an excuse to not promote her. In general, YG will not promote the Pinks unless they're pushed by either fans or the girls themselves, since Lisa is the youngest and the foreigner, I doubt she can really speak up for those things the way the others can
I don't think they had plans to give every girl a solo when Jennie had hers but there were clearly plans for Rosé that just got dropped later on, that much is obvious. Every YG group has the main rapper and main vocalist go solo.
I really don't think YG has favorites, just Rosé got nothing before her solo and Jennies gotten nothing since. It doesn't mean Jisoo and Lisa are any less overlooked however
Ikon says what???