Instead of buying a smite upgrade what if the machete had the smite upgrade from the start?
That way the champs who struggle early first clear like mainly mages can get Trailblazer at the start.
For anyone else who wants a more useful smite in terms of ganking/dueling will still get chilling and challenging.
Up the cost for switching between smites if you have to, but people rarely switch anyway.
For those worried about the challenging and chilling smite you can make it so that they dont get the full upgrade at the start.
For instance that you need the second upgrade of challenging to get the true dmg autos while you keep the damage reduction and vision on the machete.
breaths heavily