Easy for affiliates to create custom links to specific products.
Individual Affiliate percentage... for example you can assign at signup 10% and if you have a hot seller you can reward him/her with a custom percentage like 25% while all others would still have 10%.
It's really hard to tell if it's working properly. They don't give you any link activity. The dashboard only shows order totals based off commissions earned so there's really no indication that it's syncing to your store. Maybe have a real store total of sales... Total of Sales based off of what your affiliates sold...
You don't have the ability to assign a banner to a different product... Not all banners I would want to point to the main page making customers search for the product in the banner.
No bulk export for PayPal mass pay.