Yes I know that, but Rask is not going to be ready to start the season so I go back to this: who is going to sign here knowing if they make the team that they're out of a job come mid-season? I don't think you can both sign a vet UFA and also sign Rask. If you want to bring back Rask, the net is going to have to be split between Swayman and Vladar and then one goes to Providence when Rask is ready.
I understand your point conceptually but I think you overestimate the opportunity for some of these guys to find work. Right now the situations where there are not already 2 veteran or emerging prospect goalies are not as plentiful as you would believe.
Colorado, Carolina (Nedeljkovic is an RFA) and maybe Toronto (Campbell and cap make it less likely) will be looking for a starting caliber goalie. Seattle will as well. The only guys on the market that fit that bill are Grubauer, Ullmark, Rask (when healthy) and maybe Dreidger. Dreidger is rumored to be heading to Seattle. I see the rest of the spots as follows:
Calgary - backup to Markstom
Toronto - backup to Campbell
Colorado - backup to whoever they sign
Sharks - backup to jones/tandem
Carolina - tandem with Ned
Detroit - backup for Greiss
Nashville - backup to Saros
NJD - backup to Blackwood
Flyers - backup to HArt.
That's 9 spots. Holtby, Khudobin, and one of the CBJ goalies are all rumored to be available due to roster crunch or cap issues. So let's assume that leaves 6 open slots in the NHL. The vet goalie UFA market has these names in it:
Tuukka
Anderson
Rinne
Dubnyk
Raanta
Reimer
Grubauer
Mrazek
Bernier
Rittich
Hutton
Ullmark
Halak
Elliot
Lundqvist (maybe? hopefully?)
Mike Smith
Dreidger
There simply are not enough slots for all of these guys to turn down a $1.5 mil payday, even if it means they might lose their job in February. That doesn't even account for the teams that don't see much of a difference between a guy like Brian Eilliot and and Alex Lyon/Scott Wedgewood type and opt to spend $750k instead of $1.5mil. I think you could EASILY entice a Raanta type with a 1 year $3m contract and promise them they can compete with Swaymen to be in the tandem when Rask gets back given the dearth of jobs in the NHL marketplace for these guys. Their other option is to play in Europe for less money.