I have a theory that can make QoT much better without doing much.
That theory is to switch the skills Shamblers and Mulch, so mulch is on the closed skill tab with shield.
The whole "Build army when closed and destroy armies when open" doesn't make much sense to me either.
It should be Defense & Offense mode.
As for other crazy ideas I've toyed with in a mod that may or may not be popular.
1) It wouldn't hurt to give Queen (and Sedna) 6 minions instead of 4.
eg: 1: summon 1 / max 2
2: summon 1 / max 3
3: summon 2 / max 4
4: summon 2 / max 6
2) Compost could give a & health or mana steal when active.
When open you get health per hit
When closed you get mana per hit
This will help with staying power in the lane if you want to play her like a tank.
3) Spike wave
When a DG is impaled and under the affect of ground spikes a hit with a spike wave should interrupt item usage (not skills) and should prevent item usage for a few seconds.
This will go a long way in preventing the laughable "wow, I almost got killed by QoT, but I teleported away, or used a pot, or cast sigil lol" etc... and all the other things that prevents QoT from getting a kill when she deserves it.
4) Entourage should pass some damage to minions *get a count, pass a % based on that count so more minions in play = more damage reduction), because they are willing to take the bullet for their magnificent goddess. (If you have no minions you take full damage)
If you slug out a QoT 1on1 with any other DG past level 12, they can usually take you with 25% life remaining. QoT also has no defense against a Hammer / Boulder Rook which will go through her shield every single time. This would help in that regard,
Thanks for reading.