Feedback on 2 possible multiplayer custom scenarios

Just tell me which one you find more interesting or would want to play if I made it. You can also give me your own idea for a scenario and I might like it better, I like having more ideas. Do note I'm only looking to make a multiplayer scenario, no single player RPG's or anything like that.

1v1 competitive TD - This specific tower defense will be unique in 2 ways compared to others. First you design your own maze with a different map every game randomized. For example every game randomizes walls/haystacks that restrict where you can build so each map feels different. Then you build the maze for the units to pass. Second unique element is you pick what units to send to your enemy every single wave. Pick the exact units, upgrades, and possibly bosses. Get rewarded for getting at least 1 unit to the end, so every wave matters.

4v4 Zombies Awakening - What ever you call this type of game Vampire Resurrection, Jurassic Park, Probes vs Zealot. Basically a 4v4 version of the game where the map is split in 2. You get a special currency to make units to attack the enemy with large numbers. If made well it should feel like you are defending from hordes of enemy players constantly while defending. And making sure you are on the offense. You can buy more special resource with gold to be very agro early, but obviously weak at home. That's why it's a team game. Go for an early Militia rush to harass the enemy if they wall late. But at the cost of having a worse mid game. Or classic knight rush. SotL made a video on this type of gamemode if you don't know what it is.