Some of my suppliers require a different MAP for online vs. in-store sales. Currently, if I edit the price on Woo, the edit is backfilled into PHPPOS and vice-versa. It'd be nice to have an "online price" field -- if left blank would take the primary store price.
Maybe it would work if you set up a tier for your online prices and then use the option for an online price tier in store config...? I have not tried it myself.