It is a ridiculous idea to place a team in London. Paris i imagine is equally absurd, though i am less educated in that regard.
There is no hockey culture in London. There is no market for it. People point to the population and finances available in the city and presume that is enough. There is no infrastructure of hockey in the city, there is no youth system of note in the city, there is no financial desire for hockey in the city. We don't have a single national team player capable of participating at the KHL level and don't have a youth system remotely near what is an absolute bare minimum standard for an elite level European pro hockey team.
It wouldn't make new hockey fans. A league entirely filled with imports playing in a foreign league in a market with no hockey interest is an absurd business and social venture.
KHL and Russian hockey should be focusing on developing and growing hockey in it's country rather than embarking on nonsensical dreams in fairy land markets.
There are more than 300k Russian-speaking people in London and lack of youth development system does not stop the league expansion (see Yugra, Donbass, Admiral).
If the league expands to Germany, Switzerland and Sweden, even a team in London will be able to lure new fans.
The KHL is on the path of becoming European league, there is no point to continue considering it as Russian league and stating that it should focus on development. If there was political will for it, the KHL would be a different league than it is now.
Anyways, London and Paris are not targets of the league. Gdansk is an initiative of Polish federation, Huttwil is a "Trojan horse" like Poprad, Medvescak is popular enough already, and only Milan could be "embarking on nonsensical dreams in fairy land markets", but we know about long history of hockey in this city.