GG5: 彼女が次のオリンピックに出場できるか否かは微妙だ. There are doubts about [It's questionable] whether or not she'll be able to appear in the next Olympics.

The 15 sentences split between senses 1 and 2. None really reflect the sense 3 glosses, but some of the GG5 examples do. I think it's probably a worthwhile split, and I'll add something like the GG5 one as an example.

gg5, prog
daijs: "（「ビミョー」と書くこともある）俗に、否定的な気分を婉曲にあらわす語。明言したくないときなどにも使う。「『テストできた?』『微妙』」"
jitsuyou: "若者言葉で、良いとも悪いともいえないどっちつかずの様子、なんともいい難い様子などを意味する表現。 "

Added sense.
Senses 2 and 3 could probably be merged. I don't think they're difference senses, and no other ref splits like this.

@@ -15,0 +16,4 @@
+<r_ele>
+<reb>ビミョー</reb>
+<re_nokanji/>
+</r_ele>
@@ -18,0 +23 @@
+<gloss>subtle</gloss>
@@ -20,2 +25 @@
-<gloss>subtle</gloss>
-<gloss>sensitive</gloss>
+<gloss>fine</gloss>
@@ -27,2 +31,4 @@
-<gloss>delicate (situation)</gloss>
-<gloss>complicated</gloss>
+<gloss>complex</gloss>
+<gloss>tricky</gloss>
+<gloss>delicate (situation, position, etc.)</gloss>
+<gloss>close (e.g. decision)</gloss>
@@ -36 +42,8 @@
-<gloss>tricky</gloss>
+</sense>
+<sense>
+<pos>&adj-na;</pos>
+<pos>&n;</pos>
+<misc>&col;</misc>
+<s_inf>oft. ビミョー</s_inf>
+<gloss>not great</gloss>
+<gloss>iffy</gloss>

Another sense of the meaning.

@@ -36,0 +36,1 @@
+<gloss>tricky</gloss>