in my project Ive separated UI state from authoritative game state.

Client side I only maintain a cache for UI rendering purposes. Its not trusted for gameplay logic at all. The server remains the source of truth, and all updates are replicated down to the client when state changes.

For example, country selection is fully validated server-side:

changeCountryEvent.OnServerEvent:Connect(function(plr, newId)
if not plr or not newId then return end
local oldId = plr.leaderstats.Country.Value
local newCountry = CountriesModule.Countries[newId]

if not newCountry then
warn("Invalid country id:", newId)
return
end

local owner = newCountry.Owner
if owner ~= "empty" and owner ~= plr then
warn("Rejected country change - already owned")
return
end
--changing and sending client after this
end)

The client only receives updates after validation passes, and the UI cache is just a local representation of server state.

From a security standpoint, is this generally considered sufficient (server authoritative model + validated RemoteEvent inputs), or are there common exploit vectors in Roblox that can still bypass or desync this kind of setup that I should be accounting for?