...as PZ has recently been taking unoriginal ideas.
I don't understand what you mean by "taking unoriginal ideas". The games that they have implemented so far are either revamped versions of older games they use to have (Survival Games + Stimpacks), new and original ideas (Ditto, Freeze Tag) or a gametype from a different game that hasn't been done in Minecraft yet (Splatter, Murder & Downgrade). Bedwars renamed to something different is still bedwars.
Think of this; I have a chicken. I name said chicken "Cow". Is it a cow? or is it a chicken? That's exactly like taking bedwars from a popular server and naming it "melonwars" or anything else.
Copying an entire game and placing it on a different server is annoying. Everyone knows where it's originally from.. so why not just play it there instead? It's not like it's going to attract more people.