[Hot Take] I really think the Jedi Service Corps should have been a mandatory tradition that ALL Jedi should have partaken in no matter the rank and reputation in the Jedi Order.
So let me explain why
The professions of agriculture, environmental care, medicine, scholarship, education and exploration as dumping ground where only "failures" go to be of "petty" use to the Jedi Order when I think it could have been a place where it is to be viewed as worthy/noble callings in their own right, equal to or greater than being a warrior.
humility is seen as a valued trait to have in the Jedi Order Yes? So it would be a good idea to let ALL padawans spend part of their time in the Corps for threefold reasons:
1.) When dealing with certain problematic (prideful) apprentices, it might be wise to let them think they "failed" their trials (even if they really passed) & send them to the Service Corps for a time. If they learned true humility in their time there, they would finally be "passed" and made a true jedi. Their period in the Corps would ultimately have served as the final part of their trials.
2.) spending enough period of time (let's say month or perhaps a year) working with the agricultural corps would allow a padawan to truly learn the amount of work and effort required to keep people fed, and the cycle of life - not just planting seeds to grow fruit and grain, but also caring for animals. Helping a cow (or whatever the SW equivalent of a cow) give birth, caring for the baby, seeing it grow, and eventually assisting with the slaughter, would teach a padawan many valuable lessons. It would teach them to care for another being, it would teach them that death is no easy matter and is sometimes a necessary thing, and it would teach them not to let their attachment to the animal cloud the need to fulfill the animal's purpose. And above all that, growing plants and raising animals to feed the others would help a padawan realize their duty as a Jedi in the great network of all life in the galaxy.
3.) Similar lessons could be learned in other fields of the Jedi service corps, by serving time in each and every one of them as they can, they'd be able to fully comprehend the importance of each one of them, widen their horizons and gain greater wisdom, as well as gain practical skills that will aid them when they become a Knight. Or, if they fail their trials, they will at least have tried out all the other "career" options and have an easier time deciding which one suits them best.
And above all, anytime spent in the Jedi Service corps could have been a crucial way for Jedi to connect with people out in the galaxy in the amount of time as medics, agriculturalists, teachers and explorers among the other non-force sensitives to dispel the stereotype that they are isolated, out-of-touch enforcers of a useless, corrupt senate that politicians only matter to them above everyone in the Galaxy.
What do you think?