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It’s clear that you don’t understand my point. I’m not going to waste anymore time discussing this with you.

I play what people are comfortable with. I actually don't mind weak jump shifts, minor to major (only!) They're aggressive, get the hand across in one bid, play in a major, and take away a bunch of 1 and 2 without going to the 3 level ourself. I play that in one partnership. I've never played reverse flannery, but I would be happy to do so. A lot of it can be handled in XYZ and good agreements though. My main partnership plays it as a fit jump shift with limitish values. Not great (except when it comes up), but it's consistent with all the other auctions, and to start with, we wanted "no exceptions" (which is why we still play UD SP, "if everything's upside down, I can remember. If only some things are upside down, I'll get it wrong"). As always, I prefer playing "what we can remember, as long as it's not actively bad" over "better system we sometimes forget".

If you don't want "unresolved canapé sequences", and no nebulous diamond bid, I think you need some kind of constructive two-suiters at the two-level (like Roman 2M). I've toyed with the following idea, and find it a bit strange that I haven't seen anyone play like this (might be major flaws that I don't see): 1C = Strong 1D = 4+D. 4441, or 4D 5+M, or 5D 4+C, or 6+D. 1M = 4M and longer side suit, or 6+M. Could include balanced shapes too I guess. 1NT = Weak. 2C = 6+C or 5C and 4D. 2D = Multi. 2M = 5+M and 4+C. My intention was to use this with a Swedish Club, so 1C would be 11-13 NT or 17+ any, while 1NT would be 14-16 NT. There's also the Moscito/Magic Diamond style MAFIA systems where the major openings are a bit nebulous: could be any two-suiter (canapé or not) as well as single-suited (5332 counts as single-suited here). I've also seen variants including 4432 and 4333 shapes. Magic Diamond uses transfer responses to the major suit openings, so no negative 1NT. Here's my old system notes with a strong club and transfer style Magic Diamond openings (very similar to MOSCITO): http://snortingmaradonas.se/erik/relayclub.pdf A friend of mine uses a nebulous diamond that denies holding a four card major: 1C = 15+ any 1D = 10-14, unbalanced and no major. 0+ diamonds (could be 3-3-0-7 for instance). 1M = "Magic Diamond": 10-14, 4+M but not 4333/4432. Longer minor possible. 1NT = 11-14, no five card major. 2X = Weak. Here's a "Lite Version" of Magic Diamond: http://www.brenning.se/pp/MagicDlight.pdf

"Boring club, exciting pass" Pass = 0-7 or 17+. 1C = 8-17 NT. Could be 4441 with singleton minor if 13-16. 1D = 13-16 5+M or 4441 with singleton major. 1M = 8-12 4+M magic diamond style. 1NT = 12-16 unbal no major. 2m = 8-11 5+m, no major. 2M = 12-16 4M and 5+m.

You need to know if 4N is ace asking or minors here for you. I will bid 4N if it's minors and 5♣ if it isn't.