My suggestion-Don't. Point #1-There are already issues for teams travelling coast to coast and complaints of fatigue late in the season. The only way really solidify fan base is have a team there, and it doesn't make sense from a travel aspect
Point 2- Focus on viable markets in North America and fix the ones that are problems, either move the team or contract the league and reduce the amount of teams. Hamilton,Kitchener-Waterloo, Winnipeg are all all areas that would support a team-I'm sure Phoenix is supporting the former Jets, ah, No! Nashville, another bust. Both Florida teams are struggling. Atlanta not doing to good. And you want to go to Europe?
Point 3- Medical standards, could they be an issue- Look what happened in Russia a couple weeks ago. I'm not saying this is the case all through Europe, but to what extent to rinks have the required medical staff, and equipment on site. Sure, go to a professional football (soccer) pitch in Europe and it's likely loaded up. The hockey rinks?
Point 4- Officiating- We've seen the difference in the officiating in the NHL and "tournaments". Will the NHL refs travel there for games. Will their union approve it.
Many other minor issues, but these are major