Yeah they really should improve their backend systems. Ideal reference (to learn from) imo would be He..ner workflow, single sign on, comfortable and simple cloud console. Dedicated and cloud servers have good amount of control for Firewall, but only for cloud they allow to have multiple firewalls and no limit on rules.
Literally makes me want to use netcup less, simply due to lack of additional layer of firewall (especially in case of something like docker breaking all the rules, and generally leaking out a lot of ports), as for everything else, Netcup is great, just one little push more and you'd have perfection.