Use 'Lists' in more places!

If Cloudflare has the option to create these lists, why are they so limited? They should be usable anywhere we are creating rules (Hostname IN my_list_of_hostnames, Source IP Address IN my_list_of_ips, User Email Address IN my_list_of_users). Anywhere a list is applicable! Warp client Include/Excludes, Access rules! List all the things!