Is it possible to add hyperlinks/images/bold/italics/other features to the ACGM textboxes? It would be nice to be able to add pictures to the description or to specific trades instead of having to post them separately in the comments section after the ACGM is published.

Ive tried to use the HTML tags for images, links, bold, italics, etc but everything seems to be blocked

Why?

The description is there to describe the team, not give people another avenue to post their memes.

Embed tweets from insiders about players availability/asking price, embed images with advanced analytics, link to articles/trade bait lists, etc

What advantages does embedding the tweet have over just posting the link in either the description or in the comments anyways?

Like the probability of another user clicking a link at the top of a page is the same as clicking a link lower in the page or actually reading the post with the embedded tweet. If they aren't there to provide constructive feedback, having any of those elements in the description isn't changing their mind. If they are, then they'll interact with the lead comment that has that information anyways.

Ease of use, keeping everything in order, etc

Its not the end of the world to use the comments but imo it would be more user friendly to have it directly in the description or within the trade details of each trade. If theres 5 different trades and you want to post a tweet or image in each one then when you scroll to the comments to see the associated picture/tweet you can no longer see the actual trade. Its just more intuitive to have everything together imo