Too much quantity not enough quality going to Vancouver.

Let's break this down.

Bear vs Jokiharju - Probably a wash. Bear looked better playing less minutes. Joker is younger, and played primarily with a rookie in a role he wasn't suited for.
Garland vs Greenway - It's been reported teams don't like Garlands cap hit. Solid player, but the cap hit is an issue. Greenway is a different type of player, less offensive upside but better defensively and a lower cap hit. Again I'll call this a wash, but neither hold a ton of value as middle 6 wingers.
Beauvillier - Solid middle 6 winger. But again, and as we've seen the past few years most middle 6 wingers don't hold a ton of value. Barbashev went for a former late 1st at the TDL when prices tend to be higher, Niederreiter went for a 2nd. Offseason trade would probably mean a little less value than at the TDL. Buf 2nd seems appropriate.

That leaves Demko for the remaining pieces. 13th overall, 39th overall, a former top 15 pick who just had a very solid 1st season in the AHL, and a goalie prospect who struggled a bit this season and would probably garner a 3rd based on past young goalie trades. so 2 mid firsts, a mid 2nd and a 3rd for a guy who just had the worst season of his career.

What more quality do you expect here? Do you think you're getting 1st round picks for Garland, Beauv or Bear? Do you think someone's trading you a prospect like Kulich or Savoie for Demko? As a Buffalo fan I'd have zero interest in anyone other than Demko, but if the asking price is higher than anything a recent goalie has been traded for you're probably pretty far off.

Trades with this many players moving are rare in the NHL anyway, outside of the deals for guys like Meier or Tkachuk.

From this Canucks fan I think it's actually pretty solid. However it would leave the Canucks without a legit start, even though I think UPL will be a decent goalie in a few years. Still they could make subsequent moves to get a short term starter while Silovs continues to improve and run a tandem of short term starter + UPL. Nice proposal

That's a nope from Buf

There’s no shot you just said greenway and garland are a wash, garland is a 50 point guy who gets under the oppositions skin and greenway is a useless 4th liner that had opportunity last year and managed a crazy total of 11 points. He could be as good as Bergeron defensively and he’s still not a wash with garland if he struggles to produce double digit point totals. Also UPL doesn’t have much value anymore, he’s struggled at the nhl level and everyone knows Levi is the guy going forward in Buffalo now