As a note one possible answer to low level control spells might be to follow the design philosophy of something like the 2014 Sleep spell. It's great at low level but runs out of steam pretty fast as you level up forcing you to start using higher level spells.
Doesn't even have to be HP based like Sleep was, say for example Suggestion worked off of CR and any creature whose CR was higher then the spell level used would auto-save. Still great at low levels, still useful at higher levels for out of combat situations but in combat at higher levels it's not going to cut it.
The point being you can design your low level control spells to be natively less effective at higher tier play.
Doesn't even have to be HP based like Sleep was, say for example Suggestion worked off of CR and any creature whose CR was higher then the spell level used would auto-save. Still great at low levels, still useful at higher levels for out of combat situations but in combat at higher levels it's not going to cut it.
The point being you can design your low level control spells to be natively less effective at higher tier play.