In "Standard American," I must open a major with
65432 while refraining from opening a major with
IMHO, there are five card majors that are too weak to be opened and there four card majors that are too strong NOT to be opened.
I've created a system where "An extra trump is worth a king," and the minimum opening standard is Qxxxx. Thus, xxxxxx "maps" into Kxxxx, and qualifies. xxxxx < Qxxxx and doesn't qualify. KQxx "maps" into Qxxxx and qualifies, but not KJxx, which "maps" into Jxxxx.
I'm not sure Standard American is right for me. Are there any established systems (other than Standard American) that operate along principles similar to mine?