I haven't seen a single Deo-S on ladder yet so I Abstain from voting until I encounter it a few times.
As far as Genesect is concerned, it brings up an important point about the MnM ladder that has been surrounding it since its inception: -atespeed. I feel that, on its own, Genesect is an -atespeeder that is dealt with similarly to both zygarde and entei in terms of power output. However, when all 3 -atespeeders are combined with a proper lure for their counters, they are nigh unbeatable. Genesect is quite threatening when it first comes in, but in subsequent switches it is much easier to deal with. Additionally, you almost certainly know it's speed and defense stat right from the get-go because of its required Hasty nature in order to run extremespeed on it. This -def nature as well as losing its steel typing with most megas make it extremely easy to revenge with another -atespeeder. Threats such as ho-oh and pdon are hard stops to genesect's onslaught and exert their own offensive/supportive pressure on the enemy team as well as fit nicely onto most teams. My point with all of this being that, by itself, genesect is no more metagame breaking than entei or zygarde so I vote to Unban Genesect. In the context of an -atespeed meta, I feel genesect adds a lot to in terms of fun gameplay potential whilst not restricting teambuilding any more than either zygarde or entei. In my opinion, either all 3 should be banned or none of them.
As far as Genesect is concerned, it brings up an important point about the MnM ladder that has been surrounding it since its inception: -atespeed. I feel that, on its own, Genesect is an -atespeeder that is dealt with similarly to both zygarde and entei in terms of power output. However, when all 3 -atespeeders are combined with a proper lure for their counters, they are nigh unbeatable. Genesect is quite threatening when it first comes in, but in subsequent switches it is much easier to deal with. Additionally, you almost certainly know it's speed and defense stat right from the get-go because of its required Hasty nature in order to run extremespeed on it. This -def nature as well as losing its steel typing with most megas make it extremely easy to revenge with another -atespeeder. Threats such as ho-oh and pdon are hard stops to genesect's onslaught and exert their own offensive/supportive pressure on the enemy team as well as fit nicely onto most teams. My point with all of this being that, by itself, genesect is no more metagame breaking than entei or zygarde so I vote to Unban Genesect. In the context of an -atespeed meta, I feel genesect adds a lot to in terms of fun gameplay potential whilst not restricting teambuilding any more than either zygarde or entei. In my opinion, either all 3 should be banned or none of them.