[vt] came from meikyo. The other smaller kokugos that I have (smk, sankoku, iwakoku, obunsha) only have [vi].

I think this is more literary/formal than [rare]. Wouldn't expect to see many usages on twitter. Sankoku has a 〔文〕 tag (although it seems to use that tag far more frequently than other refs).

@@ -21 +21 @@
-<misc>&rare;</misc>
+<misc>&form;</misc>
@@ -32 +32 @@
-<misc>&rare;</misc>
+<misc>&form;</misc>

sankoku says vi.

将来を嘱目されている若いピアニストの英語
promising young pianist
https://ejje.weblio.jp/content/将来を嘱目されている若いピアニスト

daijs
１ 今後どうなるか、関心や期待をもって見守ること。「将来を―される」
２ 目を向けること。
「満場衆員の、最も―する所は」〈竜渓・経国美談〉
３ 俳諧で、指定された題でなく即興的に目に触れたものを詠むこと。

Have an eye on, for example:
目をつけ	327143
目を付け	138967
Promising/high hopes:
嘱望	31883

＝＝＝＝＝
将来を嘱目	108	  
Top 100 N-grams Lookup for を嘱目 (Frequency Order)
嘱目	1624
を嘱目	152	  
を嘱目さ	98	  
を嘱目され	84	  
を嘱目されて	43	  
を嘱目された	31	  
を嘱目し	25

[rare], remove [vt]

Came here because I am suspicious of vi,vt entries. sankoku specifically says vi, and has both senses.  daijs online doesn't specify.

But in the daij entry, it gives 「将来を―される」for sense [1], which is not a transitive use of する, but of させる, which we would not generally mark as vt in jmdict. (This is a discussion I'd like to have someday, but not on this term)

There is also a third definition to do with improvising poetry or music off-the-cuff in daijs.  I spent a lot of time thinking about clarifying the glosses, but 嘱目 is super rare.  I saw a news article give a full definition of the term, others put it in 「」 and add furigana, and twitter posts are mostly bots offering definitions (like, "advanced SAT vocabulary"), not-so-common in the wild. 嘱目されている appears on twitter about once per *year*.

(you can find the offhanded transitive をする use of this verb in the wild, but random people will add をする to anything).

@@ -20 +19,0 @@
-<pos>&vt;</pos>
@@ -21,0 +21 @@
+<misc>&rare;</misc>
@@ -31 +30,0 @@
-<pos>&vt;</pos>
@@ -32,0 +32 @@
+<misc>&rare;</misc>

gg5, daij, meikyo

Splitting into senses.

@@ -22,0 +23,10 @@
+<gloss>taking note of</gloss>
+<gloss>observing</gloss>
+<gloss>watching</gloss>
+<gloss>having great expectations for</gloss>
+</sense>
+<sense>
+<pos>&n;</pos>
+<pos>&vs;</pos>
+<pos>&vt;</pos>
+<pos>&vi;</pos>