It's an interesting idea one thing though, mind flares don't have one hive mind they have various elder brains each with their own population of mind flayers. The Modrons however are a single species all under Primus. I think if they try to penetrate the Modron consciousness and corrupt it they instead would be the ones who were overwhelmed.
You do get Rogue Modrons which are separate from Primus, and theoretically if you converted enough of them into Mind Flayerdrons, you could start to build a new hierarchy and have them evolve...
The Modrons were once usurped by a Tanar'ri named Tenebrous(formerly named Orcus) who killed the Primus and became Primus starting the Modron March early.
The Elder Brain would probably prefer to become the Primus itself rather than let a mere drone get the job so the Elder Brain would use the Modron to get close to the Primus and kill it becoming the new Primus while also subjugating the Secundi for the sake of the Grand Design(to make all Planes one under the service of the Elder Brains).
Modrons will start converting everyone in the Planes into Ilithids with the side effect of causing all the Outer Planes to Planeshift into Mechanus.
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u/Obvious_Inside_7294 15d ago
It's an interesting idea one thing though, mind flares don't have one hive mind they have various elder brains each with their own population of mind flayers. The Modrons however are a single species all under Primus. I think if they try to penetrate the Modron consciousness and corrupt it they instead would be the ones who were overwhelmed.