I guess there's a minor benefit for increasing the contact point between chain and chainring, reducing stress on chainring and likehood of the chain falling off. I guess you can also run a longer chain, so that it's easier to repair on the way without carrying extra links with you
28 tooth in the front, 8 speed in the back up to 34 tooth. Honestly for most applications it worked pretty good. I did find though that my Hill climbing needs or a little bit more substantial than this could handle. I did a slight upgrade to an 8-speed wide range 40 tooth in the back. Still 28 in the front. A lot better for climbing. Still have to tough it out a little bit on really steep stuff and I would highly recommend just getting a kit from eBay with 11 speed Deore. But this is cheap and janky and challenging and I like it. 😅🤙