They did already change it; I wrote about that on page 1. Lottery mining is definitely an option, or just mine 'at a loss' i.e. lose some $ compared to DCA, but help with decentralizing hashpower. See it as a cheap contribution to the stability of Bitcoin. Also consider you still 'get' the heat output, if you have a need for it.
If you live in a colder country, or in a colder region of the country, you will certainly enjoy it. But I live in an area of the country where, generally in winter, the lowest temperature is around 8-10º. And for example, a "heat wave" is expected next week, with temperatures expected to reach 24º in the middle of winter.
Therefore, it is rare to use a heater, which reduces the advantage this equipment would have.