I liked how the blademaster's wind walk ability was used for that stealth section in the second chapter of Rexxar's campaign in Frozen Throne, and I thought it'd be great to have a stealth-based campaign using that ability as well as others in a strategic, stealth-oriented way with some RPG elements. The hero's spells would be wind walk, sleep, maybe shadow meld, and a nuke that stuns an enemy for a short time. There could also be collectible items like sniper rifles with limited ammo (like the item is a sniper rifle with 20 or so charges and a small cooldown working as a "reload time" between bullets) that could one-shot enemy guards, as well as health and mana regens in the form of combat rations. Maybe even incorporate shops that sell you items to increase your stealth abilities like bigger mana pool, permanent (or temporary) invisibility, and ammunition for various weapons. Some other weapons that could be included aside from sniper rifles are pistols with silencers, landmines (goblin landmines would be perfect for this), poison dart guns, and maybe BFG shots costing a premium because they do AoE and insta-kill enemies. You could also buy weapon attachments (scopes, silencers, armor-piercing rounds) to increase damage or firing range. They work similar to magic rings and other items in the base game, where they only boost stats for as long as they're equipped. I know Blizzard kinda delved into stealth when you played as Nova in Wings of Liberty, but I'd like to see even more of it. I chose Metal Gear Solid because it's considered one of the best stealth games out there, right next to Dishonored. A lot of people like Metal Gear Solid, so I'm surprised the community hasn't churned out one of these maps yet. I haven't ever seen Solid Snake in a Warcraft 3 map, so anybody who wants to give it a shot, please let me know. I'd love to play your work upon completion.