+Imunify360 (focus on best in class)
+CDN, premium only (focus on best in class)
Generally speaking avoid investing time on inhouse products that are inferior to already existing products/services. Obviously talking about Cloudflare and Imunify here.
Great example of this, Litespeed thought it would be a good idea to build quic.cloud and their own CDN. The only problem with this is it sucks and is by no means comparable to Cloudflare's offering. If your going to build, manage and maintain something, ex: Enchance (ideally focus on improving the core), while leveraging the brand awareness of other companies that are also considered best in class.
If in-house Wordpress Security is focused on plugins, just don't.