I get the feeling those who've played previous FH games but not previous TC or TDU games will be more hyped. TC fans will complain about the dramatic map size reduction, and TDU fans may also complain that O'ahu here bears little resemblance, being squished. Then there's the high price tag, the grindy gameplay loops to afford overpriced vehicles, and constant push of MTX and season passes.
Underneath, however, there is a fun and beautiful game in a location with a nice balance of nostalgia and new exploration. The physics so far look good, at least for the stock vehicles - I don't know how fully tuned vehicles will feel. You'll find more discussion on Discord. I know I'd like to play it, I'm just having a hard time stomaching the price, especially if they're likely to heavily discount the game like they have with TC2 over the years.