I heard that BedWars Season 2 is like a water/ocean theme idk if its true but I have an idea that can be used for any season: A Space theme 
There will be some new maps: Planets, which changes the planet every week, satellite being like a well, satellite style, and Constellation, which has different stars as planets and an interesting middle
You will get a special bed topper or hub title if you max or have maxed Gravity during this period, as it is also space themed, and there could be a new BedWars themed map to connect the two!
Another interesting idea for it would be to remove all gained XP the player gets if they do not get a kill or do damage to an opponent so AFK players or runners cannot get the XP they very much do not deserve.
The max level will also increase to 100.
Possible rewards: (so far)
80 → Mercury Bed Set
85 → Venus Bed Set
90 → Earth Bed Set
95 → Mars Bed Set
99 → Galactic Bed Set
Hub Titles:
78 → No Beds In Space
87 → Moon Launching
94 → Across the Solar System
96 → Amethyst Spender
100 → HOUSTON OUR BED IS GONE
(Things purchased from challenge board shop: Jupiter Bed Set, Saturn Bed Set, Uranus Bed Set, Neptune Bed Set, Blastoff hub title)
There will be some new challenges, currencies, a new mode, and new items, so here is what I have:
ITEMS:
Space Launcher - like a wind charge but more kb and does some damage, but MUCH less then the fireball. (1 amethyst)
Yeeter - replaces the dory, does same kb but gives the player levitation for one second, before stopping. This could mean better clutches, or the enemy taking damage before fighting. (4 emeralds)
Moon Turret - an upgrade to the turret for 10 diamonds, works like a mini fireball doing 20% of the fireball damage but 2x slower then the regular turret. Cannot break deepslate or higher. (10 diamonds)
Amethyst Blade - 8 attack dmg
Does +1 more damage every five minutes inactive (not in use) resets when used (5 Amethyst)
Amethyst Arrow (2 Amethyst for 4 arrows)
Deals 2x damage and a small extra amount of knockback, also sets the opponent on fire for 1 second
NEW CURRENCY: Amethyst
Spawns in Moon Craters every two minutes, requires a diamond pickaxe to mine and obtain. Can spawn at base for 3 amethyst, spawns every 30 seconds.
CHALLENGES:
To the stars! - Use the Yeeter item 75 times
Making moons - Upgrade the Turret 50 times
3… 2… 1… BLAST OFF! - Use the Space Launcher 100 times
The rarest - Spend 500 amethyst
HOUSTON WE NEED WATER - Deal a total of 100 fire damage from amethyst arrows
Thats enough finals - Final kill 100 players using the Amethyst Blade
(note that the other challenges might reset or increase/decrease. these are just additional challenges)
DAILY CHALLENGES:
Amethyst horder - spend 10 amethyst
Enough yeeting - Use the Yeeter 5 times
BEDWARS MODE: Alien Attack
2 teams (like mega) - astronauts and aliens
Astronauts do less damage but have better defense
Aliens do more damage but have worse defense
STATS FOR THIS MODE WILL CHANGE BUT LEVELS ARE FOR BOTH
BedWars (ALIEN ATTACK)
Kill - 3XP
Final kill bonus - 10XP
Destroying a bed - 30XP
Win - 50XP
Draw - 25XP
(these may change but these xp gains are just my opinion for now )
Anyways, that was my ideas for the new season!
>:)
, I mainly decided to quit because of boredom however. Ideas like this make my day, Ill be somewhat active on the fourms however. Thanks for asking!