I can give many argues on this has big chance to be a bad trade :
_ 1 year of Porzingis who will either miss the season or ask a big contract when Brown will catch the supermax against 3 years of Smart on a very good deal
_ we are loaded with big, but 2 of 3 are very injury prone and the 3rd is 37 (not even sure he will give something next POs)
_ hurting the identity of the team (who still was not far with a naive coach) and mentality (do you prefer go to war with Spartmarcus or with Unproven Unicorn)
_ having less playmaking 1 year after having said it was our target
_ take 2 firsts for Smart and don't use the 1st one ...
_ loosing some fans
And still my question : why not a future 1st from the Grizz when you have no intentions in this years draft and loose the 1st value 1 dat after the trade 
Why are you acting like #38 is worth nothing compared to #25, and that all of the future seconds we got are worth nothing? People were acting the exact same way when we traded the #30 pick a couple of years ago because we got 2 seconds instead of a first, even though the first we traded was so late that it's worth about as much as an early second. While a first rounder is much more valuable than a second in a vacuum, these picks aren't in a vacuum because we already know that the first isn't a valuable one
And it's all well and good to say "just get a different pick instead", but why would the Grizzlies want to include a future first instead of a first that they already know is #25?
Also a possibility: Brad liked some guys in the 30s range, and was set on adding one. But we had to trade #35 as part of the KP deal, so he wanted a pick this year in return. He then traded out of the first to maintain the TPMLE, but when #31 came along there were still plenty of people he liked on the board, so why not trade down again? Would you feel better if we had taken Walsh at #25 instead of getting him and 4 future seconds because then he would be a first round pick?
I have no idea if the pick 25 will be less valuable than Walsh, but historicly our mid seconds arn't great and we picked much more usefull in the 20-30's range. Whatever is the point that if Stevens didn't expect anything than this of this draft he should have asked for a future 1st heavily protected to the Grizz. The seconds have near o value in a trade for a star. A protected 1st have some.
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From the Grizz point, a future top 20 protected 1st pick instead of the 25th wouldn't have been a huge efort to put in the balance to reach a guy, who will form a terrible bad boy defense and even maybe mentor their freak.
Our karma already bite us, I would love to see Marcus win it all,even next year, with a Morant again focus only on his team and one of the best defense since long time. Time will tell.
What if one of the mid seconds was comparable to Scoot? This is from a JD thread:
OP:
"Contemplating JD's role next season sent me down a rabbit hole...
all stats per 36 stats this past season in the g-league
Its probably obvious but player A is Scoot and player B is JD.
Player A 19ppg 7.6ast 4.1TO 27% on 3.1 3PA 76% from FT 7.6rb 19 years old
Player B 14.4ppg 10ast 3.3TO 31% on 2.8 3PA 73% from FT 4.8rb 20 years old"
My response:
"Why can't they be considered the same level of prospect?
Scoot was a 5-star prospect out of GA, #2 PG in the class, #13 overall.
Davison was a 5-star recruit out of AL and the #3 PG in the class, #17 overall."
JD was just as good of a prospect coming out as Scoot. He played one year in college, got drafted, and played in the G-League with Scoot and compared pretty darn well to him.