re: “multi communities” I too think its best to wait for a proper lemmy solution here. The only other way I can think to do it is to manually call the posts api n times for each community. Its not going to be a good experiene.
re: hiding, the solution sync has now isn’t the best but I’m waiting for this to also be added on lemmy
re: web settings: there’s an open ticket for this and I’ve just marked it as high priority. I’ll try to get that added for the next release.
re: long pressing: there’s an open ticket for this too