this has been argued about so much already, there's tons of other posts you can go to, but have the bullet notes
you need daily standing caps because people will burn through the content too quickly otherwise
you need daily standing caps on syndicates because otherwise no-lifers will flood trade chat with relics/syndicate items and hollow out those markets
best suggestion: make standing caps weekly, with soft daily caps so people who can't log in every day can still get their weekly standing
now about fortuna grind. you need 41k standing and have ~5 days worth of standing to go. at 19k a day you can easily get to old mate in 3 days. you already pointed out you should have farmed rep in the 4 months(which were, as far as major releases go, pretty stable in a week or 2 after release) you've had so i won't say anything there.
so then the question that comes to my mind is what makes you think the main issue here is standing caps? if the issue is you can't get an elite nightwave challenge, then say that. there's at least an argument about whether elite content should be accessible to newer players or those that aren't up to date with the content within that week. but nesting it inside "remove standing caps" muddies the issue. so, if given the choice, would you rather de remove standing caps or replace the nightwave elite challenge? which is the bigger issue to you, so we can address that first before the other