People are going to complain regardless

.
I will never claim to have the answers – just offering ideas here for banter. I agree that BEV/Bell has lots of bright employees and they obviously know the business best.
The only way I see that account splitting can be resolved is using a combo/multi-approach. I like
SensualPoet's suggestion above as it transparent to the honest customer.
My quick thought on this came to this conclusion: The only way to eliminate/reduce account splitting is to encourage subs with multiple receivers to have them connected to the phone line. BEV has to know where the receiver is, and this is the most economical model.
Obviously mandating connecting the phone line in an End-User Agreement has proven to be counter-productive. Subs feel like Big-Brother is over their shoulder. So encourage them monetarily. Levy a multi-receiver fee - and a hefty,
hefty, one. If they have the secondary receivers connected the fee is waived, and even possibly a small (say 5%) monthly discount on the bill (gee... that won't fly easily after reading about how BEV has huge billing problems). However, I doubt the single receiver households would be happy with that

. This would require a mod to the s/w requiring the receivers to dial in more often (say every week), and
immediately after a cold-boot. NO connect for two weeks, suspends programming until it does. If it doesn't do so already when it does connect, it could report the number of failed dial attempts since last connected. Couple that with
SensualPoet's suggestion above to find the suspected account splitters. Keep the account verification dept. to hassle
these suspects only .
Why would this work??? It might work because basically people are lazy. If I could hazard a guess, most of the honest subs that don't have their receiver connected, don't connect them because there is not a phone jack handy, or they don't want to bother to go to the dollar store to get a longer line, etc., etc. But will they connect if it going to save them some $$$. BEV could even give wireless jacks to those multi-receiver accounts that demand them.
So what about the real account splitters? Well now there is a serious financial penalty to "Joe Six-Pack" if his neighbour "Mike" doesn't pony up his share of the bill every month. And if bringing the receiver over to "Joe's" house every week to call-home isn't a hassle, it sure will be when "Joe" goes away on vacation or is at work, when "Steve's" programming gets suspended.
What about those subs who don't have a land-line? This is more difficult scenario, and I'm not convinced there is a lot of subs' in this situation, but certainly in the more urban areas it is increasingly becoming more commonplace to only have a wireless service. But I’m sure BEV/Bell could find a way to get a data-only line into the residence for a minimal fee, if not free. After all, if it is only going to be used for less than a minute once/week, for a few thousand residences what is the cost to Bell's bandwidth? They might even convince a few to reconsider Bell as a land-line provider if the right marketing incentives were applied.
What this doesn't solve is the potential problem of account splitters who live in close proximity to each other and share a wireless jack to dial in, but I would think this would be so uncommon as to be minimal impact.
What about the cottager’s who don’t have a land-line? That one I’d leave for the smart people at Bell/BEV, (or DHC

) to figure out. But after all, it is in the current End-User Agreement.
This idea however does not address the issue of piracy. Although it is not the topic of this post, I believe piracy and account splitting are inextricably linked. Eliminate account splitting; you drive the popularity of piracy, and vice versa.
And before everyone jumps all over me, as I said at the beginning of this post, I will never claim to have all the answers.