I feel like if this was in place, it would neatly solve the issue of people not posting because they can’t find a fitting community.
A user or a mod spots an incorrectly submitted post, the user that posted it can then move it to a suggested “general” community, or a specific community, possibly suggested by those who spotted the error. A mod could also do it. Maybe just have a default alternative to remove that sends it straight to a preset general community.
I don’t know how many communities on Lemmy regularly remove incorrectly submitted posts that are otherwise unproblematic, but if there’s a decent amount it could be essentially redirected to be a bit of a unique and interesting, very varied content stream.
I personally think it’s unfortunate whenever an otherwise decent user ends up being rejected for not knowing exactly how to fit their submission into the platform. Certainly a lot of that happening on reddit.
I’m thinking if this is practical and feasible, it could give Lemmy a bit of a new growth advantage.
Some thoughts I have which oppose your argument:
A mod can only be expected to be responsible for their own community. It is not reasonable to expect them to know the rules of other communities to know a post applies.
Some posts do not have an applicable community. The posts may not have a general place to be sent to.
There is no tool I am aware of to allow mods to send posts elsewhere without simply posting from their own account. I’m not sure that the use case here would justify the work needed to create that tool.
Removes posts have been determined to be problematic by nature of being deemed to need removal. Is incorrect posting not a problem?
When a mod removes a post, they would presumably tell you the rule which was broken. You may be able to adjust the post accordingly and resubmit.
Bigger is not necessarily better, and Lemmy may not need a growth advantage. Being hard to use keeps out much of the general population, which I’ve seen suggested as a benefit more than a hindrance.