As a casual fan who isn't real deep into the statistics but just a fan of my team because this is my community...I can't and don't care about ANYTHING going on with the team until we know whether it'll still be our team in the future..
I don't think you have to worry there for at least 2-3 seasons. Next season is probably 95% likely (random percentages based on what all is going on in the league). 2018-2019 is currently 85% likely. 2019-2020 is currently 70% likely. So, I wouldn't be concerned until then.
The percentages change if there is enough of a shake-up in ownership. They could potentially go into another agreement with GRA if certain people are removed from the ownership group.
The percentages also change once the 32nd team is expanded to. I don't think that's coming for around 3 seasons (at least), but you never know. Once the new expansion team is added, I'm guessing several teams will be moving unless they significantly improve (financially) in the next few seasons.
In terms of Smith, I can't see Philly being interested (or Mason for that matter). I'm guessing Mason will probably end up in Calgary before Smith. Philly would be smarter to sign one of the UFA goalies. I'd recommend Condon or Bernier, but they may want longer terms than Philly would like with their developing goalies (more than 3 years). For more solid or shorter term options, Miller or Budaj would probably do the trick.