I submitted my feedback to the FTC email with my request that Lifetime Asiana's Diamond Plus members earned before Jan 1, 2019 be given access to the First Class Lounge.
I don't know how many of us exists. If it is a very small number, I can imagine it cost them little to add this benefit or just put an extra legacy tier. If there is a decent size group in Korea, I can imagine this missing benefit would been reflected on the feedback before.
The best case is there is only a few of us, and Korea Air just sweep us to the Million Miler Club and call it a day. The reasonable case is there is a decent number of us, and there will be added benefit (or a legacy tier) for those earned status pre Jan 1, 2019 and that includes benefit enhancement to all the existing Lifetime Morning Calm Premium member who also earned their status pre Jan 1, 2019. The worst case is they just ignore our issue, and we lose access.