Something

MyAddOn_Design = {
    { 
        type="Frame",
        name="$parent_Frame", 
        parent="UIParent", 
        inherits=nil,
        methods = {
            SetHeight = { 100 },
            SetWidth = { 100 },
            SetPoint = { "TOPRIGHT", -50, -50 },
        }
        frames = {
            {
                type="Button",
                name="$parent_SomethingButton", 
                parent="MyFrame", 
                inherits="UIPanelButtonTemplate",
                methods = {
                    SetPoint = { "TOPLEFT", 20,-20 },
                    SetWidth = { 100 },
                    SetHeight = { 20 },
                }
            }
        }
    },
    {
        type="Frame",
        name="$parent_Frame2", parent="MyFrame", inherits=nil, 
        methods = {
            SetPoint = { }
        }
    },
}

MyAddOn_UI = {
    Design = MyAddOn_Design,
    Cache = {}
    Worker = function(self, frames, root, parent, lastname)
        for _,f in ipairs(frames) do
            local p = f.parent and getglobal(f.parent) or nil;
            local n = f.name and gsub(f.name, "%$parent", lastname);
            o = CreateFrame(f.type, n, p, f.inherits);
            for m,v in pairs(f.methods) do
                o[m](o, unpack(v));
            end
            if(f.frames) then
                Worker(self,f.frames,root,f,n);
            end
        end
    end
    
    Init = function(self)
        Worker(self, self.Design, self.Design, nil, "MyAddOn");
    end
}


MyAddOn_UI:Init();