Unpopular opinion:

Tier Point systems that are not based on revenue tend to be good for leisure travellers and some business travellers, but not all.

I am in the situation where i travel around 30-40 flights per year, 70-80% of them for work, in economy, booked last second normally. Furthermore, the flights are short flights within europe.

In non-revenue based Tier systems I would get horrible points for the spend that I have. I might grab a 1-2 hour economy flight last second for 600-700e, and I would get absolutely rubbish tier points.

With revenue based changes I will more easily get status.

There are quite a few business travellers like myself who will benefit from revenue based loyalty programs.

I think that it will mostly be leisure travellers who suffer from these changes, while business travellers doing economy and short flights will heavily benefit. For long distance active business travellers who fly in business class, this change is most likely +- 0.