With the amount of items that you can earn at the gold saucer increasing every few patches it seems, the one thing that hasn't changed since I started playing is the amount of MGP you can reasonably earn each week. Personally, since I started playing in October 21, I have almost everything save for the most recent 4 million MGP mount and the cards which I am working on.
Now, MGP wise, there are a few things that I feel need an increase in pay-outs.
Triple Triad Open Tournament
about 10 minutes of game with a 3-5 minute wait in a queue every 2 hours. The winner gets around 2k MGP and a few Gold Loot boxes depending on RNG which don't exchange for much. Compare this to the gates which can be done in less time and other than every way the wind blows, you can get a maximum pay-out with skill in less time which can be 5k or more MGP. If you lose, the pay-outs are even worse for the tournament.
I'd suggest doubling the pay outs and increasing the value of the cards you get from the loot boxes.
Jumbo Cactpot
Matching all 4 numbers is nigh impossible, especially considering there is a piece of glam that goes with it that will be virtually impossible for most people to even get since it is solely RNG ,and a 1:9999 chance of matching the numbers.
Disregarding the above, the pay-outs for 1 number matching is too little. Matching 2 numbers still has an incredibly low chance, and since i've started playing almost 1.5 years ago, has never happened which means each week the most MGP an individual gets is less than 4k MGP. Compare this to the mini cactpot which you can usually get several times that amount a week, usually at least coming away with 5k average a day. For such a big event, it's the most anti-climatic event in game just because the chances of winning are minimal...and to put things into perspective. With 3 different numbers a week, that's 3:9999 of winning which translates to winning once every 64 years.
The ring itself should be moved to an achievement tied to the gold saucer such as the 1m Cactpot achievement and the MGP pay-outs increased on a single number winning, and thus increasing other pay-outs, otherwise it just comes off as completely futile to do as a weekly event unless you are aiming for the million MGP achievement.
A permanent way to buy MGP tokens with Tomestones like with the moogle event
I cap poetics every few days and finding that there is nothing worthwhile to buy with them, I have stocked up on relic supplies. Mats are worthless and i'm quite well off as is and have far superior income methods than selling a few mats on the MB. So MGP tokens would be good thing to spend it on, even if it's only 30k MGP for 2k tomestones as an example. This would go a long way to helping players catch up with the gold saucer grind as there was recently the Zeppelin mount introduced for 4m MGP compared to the prior most expensive mount only being 2m MGP.