Port OpenWRT from TP-Link Archer MR200 v1 to TP-Link Archer MR200 v7?

How hard is it to port OpenWRT for TP-Link Archer MR200 v1 to TP-Link Archer MR200 v7?

Is it worth the effort and the potential risks involved?

The first step is discovery -- it's necessary to identify all the key components and how things are configured from the vendor.

https://openwrt.org/docs/guide-developer/adding_new_device