we generally try not to mix PoS within a single sense

@@ -17,2 +17 @@
-<gloss>abundance</gloss>
-<gloss>plenty</gloss>
+<gloss>abundant</gloss>
@@ -21 +20 @@
-<gloss>affluent (society)</gloss>
+<gloss>affluent</gloss>
@@ -26,2 +24,0 @@
-<gloss>luster</gloss>
-<gloss>lustre</gloss>

The definition could do with a few adjectives.
gg5:
～な 〔豊富な〕 abundant; affluent; ample; plentiful; bountiful; copious; exuberant.
●潤沢な資金 ample funds
・潤沢(な)社会 an affluent society.
.
The "luster" sense seems less common, and better placed at the end of the definition, and is different enough to be a distinct second sense, I feel.
.
Eij
 潤沢な漆黒地
glossy jet-black glazed ground 〔黒釉の表現〕
.
"favor" is an ambiguous word and I'm not sure exactly what sense is intended, and I don't see it mentioned in the half-dozen sources I checked. I suggest removing it.

@@ -16,0 +17,9 @@
+<gloss>abundance</gloss>
+<gloss>plenty</gloss>
+<gloss>ample</gloss>
+<gloss>plentiful</gloss>
+<gloss>affluent (society)</gloss>
+</sense>
+<sense>
+<pos>&adj-na;</pos>
+<pos>&n;</pos>
@@ -19,4 +28,2 @@
-<gloss>favor</gloss>
-<gloss>favour</gloss>
-<gloss>abundance</gloss>
-<gloss>plenty</gloss>
+<gloss>lustrous</gloss>
+<gloss>glossy</gloss>