I'd rather Oda to take as much time as he want for the main event which is the war with Kaido and BM but he already prolonged a bit lackluster events like the Prisoner Mine and Odenpiece (which has some cool & important highlights) so he's already losing a lot of time if he is determined to finish OP within 5 years.
I hope Wano war will not only focus on putting so many characters and cool panels as much as possible, but to make the war impactful, well-written, and make sense.