Honestly, i don't mind really big series as long as they are interesting and i really like mysteries...but the cases have gotten simpler, faster and less interesting over the years, he doesn't even play as much with the characters as he should, the last case with Kaitou Kid was a wasted opportunity, even worse if you recall it was actually Vermouth.
If it was something like earlier Detective Conan...fine, i like mysteries and the author would come up with some crazy scenarios and murder methods, but at this point, just ending the story would be better or maybe go away from murder for a while, i know Shinichi is mostly interested in murder cases only, but there are more crimes out there and we've had some short chapters where a murder did not occur.
Or make some more slice of life stuff, that chapter where Kogoro was running away from the Detective Boys was cute and fun, and the DC cast is wacky and fun enough to survive a few happier chapters.