It seems like wear would be less of an issue and the bulk properties of the resulting plastic would be emphasized.
The real issue — plastic is cheap, manufacturing is expensive. As result marketplace is full of fashion items [2].
Obviously the most important thing to do is to reduce how much plastic is produced in the first place. Plastic recycling doesn't solve the microplastic issue, it arguably makes it worse, so any scrap plastic should be responsibly burned for energy and that energy should go towards production using materials that aren't plastic.
Use plastic only for products where the use of plastic is necessary for some critical functionality, and cannot be replaced with sustainable, biodegradable, properly recyclable materials. And only for products that are meant to last a long time, all single use and disposable plastic (such as packaging) needs to disappear ASAP.
Especially aluminum recycling (and most other metal recycling) is a win-win, both when looking at energy expenditure and environmental impact from mining.
Plastic recycling doesn't work currently. There are too many mutually incompatible types, and sorting is painfully manual and slow, it's exceedingly hard to automate and make efficient. A lot of plastic types cannot be reformed or remolded at all, so the only use for them is to be ground up and used as filler material.
All of this plastic processing just further exacerbates the microplastic problem. The further you grind down and reuse plastic, the worse the end product becomes and the more it sheds microplastic when used or exposed to abrasion, UV light and other forms of wear and tear.
So I propose that we cut the head off the beast, strongly curtail plastic production and try to responsibly get rid of the microplastic-generating plastic we already have. Incineration -when done correctly- is a responsible way of disposal that also generates power. We already burn dioxins and many other harmful compounds to dispose of them safely and with minimal environmental impact, if done correctly.