Dev Playerinfo Addon

Hey guys, I don't know if this is a shitpost or not but I was wondering if I could get some input from you.

I've made a simple addon that displays some server adverts like a welcome message on first time connecting and player info on disconnect. It does this by checking a database file (sv.db) whether or not the player has ever joined before and then displays a message if it their first time on the server.

I want to add some more features to this addon because it is pretty plain right now. Any ideas on some cool things I could add?

Spoiler: source code

Code:

--[[----- Simple Join & Disconnect Messaged by Wilks -----]]--

--Clientside Code

net.Receive("JoinInfo", function()
    local PlayerName = net.ReadString()
    local firstTimeJoining = net.ReadBool()
    local color_broadcast = Color(178, 34, 34, 255)

    --first time joining message
    if firstTimeJoining == true then
        chat.AddText(color_broadcast, "[server_name] ", color_white, "Welcome to server_name ", PlayerName, "!")
    end
end)

net.Receive("DisconnectInfo", function()
    local DisconnectedPlayerName = net.ReadString()
    local DisconnectedPlayerID = net.ReadString()

    --disconnected player message (for admins)
    chat.AddText(color_broadcast, "[BG TTT] ", color_white, DisconnectedPlayerName, " (", DisconnectedPlayerID, ")", " has disconnected!" )
end)

--Serverside Code

local Player = FindMetaTable("Player")
util.AddNetworkString("JoinInfo")
util.AddNetworkString("DisconnectInfo")

function Player:ConnectData()
    local ID = self:SteamID()
    local name = self:Nick()
    local firstTimeJoining = false

    --checks if player has joined server before using sv.db database
    if self:GetPData("player_ReturningPlayer", 0) == 0 then
        firstTimeJoining = true
        self:SetPData("player_ReturningPlayer", 1)
        print("Player ", name, " for the first time!")
    else
        firstTimeJoining = false
        print("Player ", name, " has joined before.")
    end

    --sends join info to client
    net.Start("JoinInfo")
        net.WriteString(name)
        net.WriteBool(firstTimeJoining)
    net.Broadcast()

end
hook.Add("PlayerInitialSpawn", "SendPlayerConnectInfo", Player.ConnectData)

function Player:DisconnectData()
    local DisconnectID = self:SteamID()
    local DisconnectName = self:Nick()

    --sends disconnect info to client
    net.Start("DisconnectInfo")
        net.WriteString(DisconnectName)
        net.WriteString(DisconnectID)
    net.Broadcast()
end
hook.Add("PlayerDisconnected", "SendPlayerDisconnectInfo", Player.DisconnectData)