While the game had a marginally smaller player base, it had a 1/8192 chance to encounter a shiny, and on top of that there's ways to increase your chances even more, that's a tad bit higher then 1/32000 lol. That and having the ability to turn the feature off or limit it would negate any spam annoyances. As far as newbies being ripped off, have it be a feature that needs to be opted into and and maybe it gives a warning.