It never saves time, my PR application went from 12 months to 26 because I sent papers they didnt ask for... Immigration is never gonna trust what you say, thats why they ask permission to request info from CRA, CBSA and RCMP, what they want to know, they will ask themselves... how can the officer be sure that you didnt furgered those documents...? Its a matter of common sense guys, just read the guide, answer what you are asked for and restrain from making out forms and sending documents that are not asked for, wait until they actually read your application and ask you for what they need if they need anything at all....
I just dont understand the willing on some people to complicate such simple paperwork... plus, all that people that send stupid amount of unasked documents just make their process and everyone elses slower because officer need to spend more time trying to make sense of all those documents...
Thats exactly what they offcier of immigration told me las time, he needed go check throughfully every single piece of paper that I sent that wasnt asked for, and corroborate with actual info he got from other agencies, so he had no time to go through it all day, and put my file on hold until he was able to finish everything. He said my file would have been done long time ago, but because I sent all those papers, now he needed to check and recheck and corroborate with what he received, and that my file was slowing process of other people as well