A few house cleaning items:
Because anyone who follows the NHL knows that every year just about every NHL team has more forward depth than defense depth, you simply cannot compare the value a defenseman goes for versus a forward. Depth defenseman ALWAYS carry more value than depth forwards do at or near the deadline.
Second, teams that look to add depth for playoff runs are usually looking for some type of intangible that improves their team in an area of weakness. If it's not scoring, it's face off skills, PK skills, size, toughness, playoff experience, etc. Weal literally brings none of these intangibles to the table. He is a small, 20 point fringe NHL'er who doesn't bring size, toughness, or high end faceoff/PK skills, that isn't good enough offensively to play in a bad teams top 9 consistently, let alone a playoff team.
You said, and I am quoting this word for word:
" Playoff teams are more than happy to get players like Weal for a 3rd or 4th. "
So let's take a look at every forward who was dealt at or near the last two deadlines to a playoff or potential playoff team:
2018
Patrick Maroon - Went for a third round pick and nothing prospect
27 goals and 40+ points in 2015-2017, in the middle of a 17 goal/40+ point season in 16-17. Brings size and toughness. In no way comparable to weal. w
Ryan Reaves - Went for a 4th round pick
Has size, toughness, and playoff experience that Weal doesn't. Is a legit NHL 4th liner. In no way comparable to Weal.
Mark Letestu - Went for a 4th round pick
Had SEVERAL 25-35 point NHL seasons and playoff experience. A better version of Weal.
Frank Vatrano - Went for a 3rd round pick
Was 23 years old when he got traded, not 26. Still a prospect versus a veteran. Better AHL and NHL numbers than Weal at the time of trade. Clearly proven to be a better player with 13 goals in 44 games for Florida this season.
Nikita Sashnikov - Went for a 4th round pick
I will give you that one. Of course, people do make bad trades sometimes so this could be considered an outlier as you will see.
Joe Morrow - Went for a 4th round pick
Size that Weal doesn't have, former first round pick, and was younger than Weal at the time he was traded.
2017
Jarome Iginla - Went for a conditional 4th round pick
I don't even need to explain this one
Tomas Vanek - Went for a 3rd round pick
I don't even need to explain this one
Dwight King - Went for a 4th round pick
6'4 230 and tough. 70+ games of playoff experience including cup runs with LA. Seasons if 15 goals/30 points and 13 goals/26 points which is better than Weal.
Viktor Stalberg - Went for a 3rd round pick
6'3 210, very good skater, very good on PK, playoff experience including cup runs with Chicago.
Vernon Fidler - Went for a 4th
Tough little bastard who skated extremely well. Was good on faceoffs and on the PK. Had 5 seasons with double digit goals 4 seasons with 25+ points so a more consistent and productive player than Weal offensively.
Tomas Jurco - Went for a 3rd round pick
Bigger, drafted early in the 2nd round, and had just turned 24 when he was traded as opposed to being almost 27 like Weal. Either way an argument can be made that he is comparable to Weal.
So over the last two years 12 forwards were dealt at or near the deadline to playoff or potential playoff teams for a 3rd or 4th round pick. There is only ONE out of the TWELVE that you can say is comparable to Weal (Sashnikov) and ONE more that you can even make an argument for as being comparable to Weal (Jurco).
Again, one last time since I know you are going to try to change the argument and not man up to the exact words you said which I had, have, and will continue to prove as being flat out wrong:
"Playoff teams are more than happy to get players like Weal for a 3rd or 4th."