I didn't make this clear (yet) - most of those who are proponents of adding AI, are suggesting it with the core idea being that AI will be only used to fill up the queue if there are no players to match up against.
I'll be going into more details of how (not that it's not a "How" discussion, "How" only related to how it will work under the hood) those could be regulated - a quick note for those pondering it: allow only when there are no appropriately-rated players to fill the queue, and even then, maybe give priority to off-rated players than to AI, depending on the scenario.
The only idea that doesn't fit the above is the idea to "have new ladder players have a couple of first games vs AI", which sounds reasonable.
Also yeah, most people would argue that cheat-modifiers for AIs are a no-no, and that weak AIs are not worth adding (but that is beyond the scope of what we could affect, things like which AI to include and which not to would probably be decided by existing team that take care of the ladder happenings and other game-related technicalities).
I'll also be adding a more detail explanation (in a latter message, as my own point of views, as to not sully the 'Log' post) why technically adding even the most braindead AI wouldn't really matter whatsoever - rating related or "bad habits" related, it doesn't actually matter at all - but again, I want to first complete the Log message (I'm not doing it non-stop, and I ain't paid to do it, so you'll have to be patient).