[MENTION=6855234]CTurbo[/MENTION] Although your idea is quite funny, you might get disappointed Players unless they do not mind a highly unrealistic playstyle.
A spear ends to be a useful 1 on 1 weapon at about 9 feet and even at that length you cannot realistically throw it anymore or use it one handed.
A pike (at least in my games) is ONLY usable in Formation. A pike does not have 12 feet or is a Long spear but it stars at 14 and goes up to 18 feet. It has to be with used 2 Hands (and a foot in the case of setting it)
It often is set against a charge of cavalry. It is extremely effective for that purpose, unless you take the highly trained polish cavalry who used Specialtrained horses, high attack Speed and Lances of 24 ft length to Counter pike formations
In my game the enemy ork hordes have pike formations, a pike is mostly a npc weapon.