I would support removing the limitation (unless it breaks stuff), but I would want:
a) to still get a warning that you're posting something with a weird date (sometimes, say, you're posting something that's been in an open tab for, *cough*, days, and the reminder to change the timestamp is nice);
b) to still have the "don't show on reading list" option. I've never used sticky posts, but I use that regularly - because I sometimes actually use my journal as a journal rather than a blog, so I'll backdate a series of posts that were, say, written on paper while I was off-internet, or something, and I don't want them flooding the reading page. There are other reasons too - like if I have to lock an old post for some reason and want to put up a public placeholder explaining that it was locked if people come looking. It's nice to have a way to post something public without broadcasting it. It remains a very useful option.
no subject
a) to still get a warning that you're posting something with a weird date (sometimes, say, you're posting something that's been in an open tab for, *cough*, days, and the reminder to change the timestamp is nice);
b) to still have the "don't show on reading list" option. I've never used sticky posts, but I use that regularly - because I sometimes actually use my journal as a journal rather than a blog, so I'll backdate a series of posts that were, say, written on paper while I was off-internet, or something, and I don't want them flooding the reading page. There are other reasons too - like if I have to lock an old post for some reason and want to put up a public placeholder explaining that it was locked if people come looking. It's nice to have a way to post something public without broadcasting it. It remains a very useful option.