Thank you to u/Amberraziel, u/ICrySaI and u/Piduf for some edits to this text, the original versions, will be written below the 6 things mentiond in the post.

The values would most likely be changed, if they were added!

(I wrote "The values would most likely be changed." in the 3rd thing to add, but many didn't see it)

1. Objects created by Behemoths give xp when destroyed. This would make some players want to fight Nayzaga, Charrogg and Stormclaw. 5 for Charogg blobs, non electrified Stormclaw spikes and non electrified Nayzaga orb launchers, that have 2 spikes, 10 for electrified Stormclaw spikes electrified Nayzaga orb launchers, that have 2 spikes, 15 for non electrified Nayzaga orb launchers, that have 5 spikes and 20 or 25 for electrified Nayzaga orb launchers, that have 5 spikes. Since it worked with Boreus, when its minions started giving xp when killed. (Yes I'm the person who made this meme https://www.reddit.com/r/dauntless/comments/kq7zdx/id_still_rather_fight_a_flameborn_rezakiri_than_a/.)
2. 2 Banners that both after a delay, gives you and nearby slayers a buff for 30s, 1 Enrages nearby Behemoths for 1min and the other Athercharges nearby Behemoths for 1 min (Athercharge 1 doesn't work if the only nearby Behemoth is Boreus), adter the delay ends they imidatly Enrage/Athercharge (Depending on the Banner). These Banners main purpose is to help do quests and bounties.
3. A new item that has a cooldown or an ultimate for a legendary weapon, that is not usable if somebody already nearby has the effect. The effect gets better with each nearby slayer. This item heals you for 75% of your flask's healing value + an extra 150 for each other slayer nearby, gives your max possible health ( Worded like this to make it so that Discipline reduces the shield you get.) + 250 for each other slayer nearby worth of shields (Doesn't work with Guardian, that way another person gains a ton of shields, when you use it), makes you take (25 + 5x number of other slayers nearby )% less damage, immune to status effects and makes you unstagarable to most things for 15s (Malkarion and Torgadoro still can grab you). The catch is that this buff makes Behemoths, Objects created by behemoths and Fauna focus you until the end of the duration. Yes I just made something for players, who want to tank and accidentally made something that is better if you have either normal players or leeches near you.
4. Some cells can be put into 2 cell slot types (3 if you count the Legendary weapon slots). Mostly cells that can be seen as 2 possible Perk types: Strategist (Currently just Defence, but could also be seen as utility), Evasive Fury (Currently just Technique, but could also be seen as Mobility, Engineer and Mender (Currently just Utility, but could also be seen as Defence. Also so this post would be correct https://www.reddit.com/r/dauntless/comments/jr8bl6/defensive_cells_balance_changes/) andAetheric Force (Currently just Utility, but could also be seen as Power).
5. Add perks that give a benefit: if you healed x amount of health to other slayers, revive others or buff others. A perk that gives you more health and makes you take less damage for each nearby slayer, but makes Behemoths and Fauna target you more often. Yup more supporting and tanking perks.
6. Make it so you there are 2 parts Agarus's non spore aka mushroom so you can get more than 1 of each in a run. Just something that I want.
   

Edited to either make it more understandable or fixing issuse in thier design.

1) previously "A potion that gives you and nearby slayers a buff and Enrages nearby Behemoths for 30s and A potion that gives you and nearby slayers a buff and Athercharges nearby Behemoths for 30s (Dosn't work if the only nearby Behemoth is Boreus). These potions main purpose is to help do quests and . A potion that gives you and nearby slayers a buff and Enrages nearby Behemoths for 30s and A potion that gives you and nearby slayers a buff and Athercharges nearby Behemoths for 30s (Dosn't work if the only nearby Behemoth is Boreus). These potions main purpose is to help do quests)" u/Piduf

3)An item that has a cooldown, that is not usable if there are <2 slayers near you or somebody already nearby has the effect. The effct gets better with each nearby slayer (2 slayers/3 slayers/4 slayers/5 slayers). This item heals you for 75%/150%/225%/300% of you flasks healing value, gives your max posible health (Discipline reduses the shield you get) + 0/250/500/750 worth of shields (doesn't work with Guardian), makes you take 30%/35%/40/50% less damage and makes you unstagarable for 15s (Malkarion and Torgadoro still can grab you). The catch is that, this buff makes Behemoths, Objects created by behemoths and Fauna focus you until the end of the duration. The values would most likely be changed. Yes I just made something for players, who want to tank and accidentally made something that is better if you have either normal players or leechers near you.

6) previously "Make it so you can break Agarus's non spore aka mushroom parts twice. Just something that I want." u/Amberraziel