The Ruusan Reformation ultimately doomed the Jedi Order of Old
I have my issues with The Ruusan Reformation, not least of all because it said “hey let’s get rid of our military so that the next big crisis that comes along will hurt us!” But the other thing is, it forced the Jedi to become part of the Republic Government. One of the Reasons the Jedi were so effective in the pre-Ruusan era was because while they allied with the Republic and were technically members like any other planet, they were not party to the government. Several times in their history whenever the Republic acted poorly or did something horrible, the Jedi either threatened to leave or actually did, and that lit a fire under the government’s ass to do better. In other words, this system made sure the Jedi kept the Republic honest. However, as the Sith Wars occurred, the Jedi began ignoring some of the minor issues the Republic had, which was understandable given that an Empire that endorses slavery and desires galactic domination is a tad more pressing than some senators taking bribes. But the Ruusan Reformations changed the relationship. By subjecting them to government authority, the Jedi were forced to make compromises to their principles for political convenience, thus they ignored the increasingly blatant corruption in the Senate. In short, the Order Broke its rules on attachments by being attached to the Republic and refusing to fix it or fight against it, often acting as its enforcement arm. The Kaleesh-Huk War and the Mission of Gaalidran are perfect examples of this. Had the Jedi remained neutral and outside the Republic like in the past, they would have probably stopped the Separatist Crisis before it devolved into the Clone Wars.