Boi were do I even start.

Lets get some things straighten up at first.
I will not go into detail about newer players, they have totally different issues to solve first and Exceed weapons aint one of them.

Raid Medal Shop: Easy to get your shit in a couple days (if you aim for the big ones a couple more days) work. Here is a run down of your daily income doing your (probably?) usual daily Raid-Routine (Soloing).

Standard: 2 Medals per run
Expert: 3 Medals per run
Ultimate: 7 Medals per run

Lets sum up: (2 + 3 + 7) x 18 = 216 Medals a day.

Rags and Guardians are a different story, so I go by detail of the rewards.

Ragnarok-Raids (Cata & Guardian)

Hosting: 9
MVP: 3
Participation: 3

Since you gonna do 1 Guardian per day anyways to get your Och (Phantom Guardian) Raid, it is 24 extra, which makes it 240 Medals per day.
Hunting down other peeps Och/Guardians/Rags means, in less then 8 days you got a copy of a phantom weapon of your choice. If not needed, other convinient stuff like Prem. Tickets, Dragon Eyes, Shards, Orichalcum or the quite expensive Pages for T4-Soul Books.

-------------------------------------------------------------------------------------------------

Union Event

I dont even know why this is an issue at all. Either you need the weapon or not is up to anyone themself. Some people still to this day get destroyed with their amazing teams because they got like no Defender weapons in their grids and neglect the fact that you actually need to survive shit to get something. 30% is a lot and can ease out a lot of problems some elements have. Players that are neither new nor long time player should have interest in those 2 weapons. They are a big boost for just one slot each.

-------------------------------------------------------------------------------------------------

Guardians

It is harder to farm Magna then farming Globes. Guardians are and will be a all time flavour of the month and you just need to tag them for a 50/50 roll on a Globe. You are also always guaranteed a Fragment which 10 can be converted into into a Globe (Batch-Type system, cost increases after the first batch is bought).
The first copy of a weapon needs 20 Globes, next 30, then 50 and last 75. This is on a monthly reset like most other shops of the game and will reset back to the first value.
Obviously you get some more Globes if you host them and if you are lucky, you may also drop a weapon, but that's up to RNG. Oh and Regalia can drop aswell, so you can get a slight refund on hosting.

-------------------------------------------------------------------------------------------------

Light & Dark Ultimate Nerf

Light Ultimate gets some major nerfs that make it far easier as it is right now. One big one is, normal OD doesnt dispel anymore, so this already helps out a lot.
Secondly: The 50% Trigger only happens now once for the whole raid. 500k HP one time, Atk, Light Atk and Def buff (NO Dark Resist buff). No more newly joining triggers and refreshing buffs by people joining late.

Dark Ult also gets some massive nerfs. -7m HP down, no more dispel. Overheat is now Burn and can be cleansed, only 3 turn duration. No more def buff. Affliction damage reduced (cap 500).
And if I'm not mistaken also - Rampage gone.