As a follow up, it would be easier to discuss this if you are able to join the discord server.

I'm not sure what you are looking for? Are you looking for:

• Every seed mapped out? (Nothing close to this exists)
• Possibilities on each seed? (A few different resources possibly have this)
• A list of all possible things that can go good/bad on a seed? (I can probably give a non exhaustive list)
• Something else?

Depends which run you are referencing. Some of the top runs manipulate the starting seed to get predictable rng in the run. As part of the setup you need to get some information from the damage rolls on the first enemies in the game. Since this isn't part of the actual run most people use the 4x booster to speed through this part. This is probably what you are seeing.

I think the general approach to adding categories is "If enough people run it the board will be made" so whilst I'm not a mod my advice would be to just do it, since you don't need a leaderboard to run it anyways.

From a more technical standpoint, the CSR mod can operate in unpredictable ways with some of the skips (specifically 2x/4x booster and Auto-Battle) which can cause skips to either not skip or skip incorrectly which loses time. Furthermore a handful of post battle skips can either break the 4x booster or cause softlocks if at max gil. So whilst it is possible to run boosters% with the mod in theory it is not currently supported.

With all that said, as I said previously, there's nothing stopping you from running it and at some point a board could be made.

There are a couple of chance based barriers, but they are very soft barriers. On Mi'ihen Highroad you need Kimahri to learn lancet from a bomb and on Djose Highroad he needs to learn Stone Breath from a Basilisk. If you don't get these from natural random encounters you end up having to force encounters but it is very uncommon for this to happen.

You don't need to do manipulation and in fact it is probably best to learn the run first before attempting that since it requires some understanding of what you are doing to utilise effectively. Not sure what the link is off hand but I'm sure someone can supply if you're dead set on it.

If you're planning on Any% - Cutscene Remover then it is very hard and a lot of effort to manip in that category due to the lack of downtime so I would advise against it for that anyway.

Hope this helps.