セオリー	        370,962	98.8%	
セオリ	        4,613	1.2%	
セオリー通り	24,777	99.8%	
セオリ通り	51	0.2%

@@ -6,0 +7,4 @@
+</r_ele>
+<r_ele>
+<reb>セオリ</reb>
+<re_inf>&sk;</re_inf>

That's fair enough. Probably best as a separate sense.

@@ -10,0 +11,3 @@
+</sense>
+<sense>
+<pos>&n;</pos>
@@ -12,0 +16 @@
+<gloss>established tactics</gloss>

I don't think that ultra-concise definitions which only
technically capture the nuances of a word's usages are going to
be the most useful. I know it's not this project's responsibility
to be an English dictionary, but there really are lots of
students and translators out there who get this one wrong all the
time. It's not our fault that they don't think harder about the
context in which words are used, but why not nudge them in the
right direction? The way in which the word is used in Japanese
often wouldn't be considered idiomatic in English, and I don't
think it would hurt to draw some attention to that.

for example see:
https://twitter.com/DarkSoul4242/status/1502535763527086080

@@ -11 +10,0 @@
-<gloss>strategy</gloss>
@@ -12,0 +12 @@
+<gloss>common strategy</gloss>

https://www.lexico.com/en/definition/theory
"A set of principles on which the practice of an activity is based."

I think that's the "set of principles" sense of theory. "strategy" may be too context-specific. I'm not sure additional glosses are needed.

GG5
「ここはセオリーどおりに, バントするのが順当だ.　The usual [expected] thing to do (in this situation) is to bunt.」

@@ -10,0 +11,2 @@
+<gloss>strategy</gloss>
+<gloss>standard procedure</gloss>