TBH, I don't quite understand what you mean here.
Sometimes I mark the beginning of a new phrase or section in an arrangement, after a double bar line, so to say. If I feel I want to emphasize the clave in a 3-2 situation, then this could mean not to hit the 1 of the first bar, but to anticipate it - on the "and" of 4. It depends on how I feel at the moment. Again, structuring the piece and playing pick-ups and fill-ins or any way of marking the beginning of a new phrase is mostly the timbalero's or set drummers territory, so when in doubt, don't step on his part.
That's nice. I usually do it kind of the other way around. Right before a montuno in 2-3, I normally play the tumba on 4 (often without the 4+, emphasizing the ponche on clave) and then start the montuno with an open on the macho. I don't know where I got that from (or if it's even "right"), it just sounds good to me.
Sounds good to me, too ... You know, it's all possible according to the arrangement, and considering what the other guys do.
I'm not sure if I've ever encountered a montuno in 3-2 when playing congas, so I don't know how I would play it.
That depends on the arrangement and the other percussionists, like the fill-in of the timbalero. There are several ways to deal with it, and I don't like all of them. I prefer to delay or postpone the abanico for one bar, if it's possible.
I also haven't thought too much about the timbalero yet, I guess I'm only familiar with abanicos ending on 1.
Basically, yes. And I don't like to play an open tone on the macho under this rimshot. The hembra might work, but I can't tell you with authority whether a plain timbal rimshot wouldn't be even more effective. By the way, the finish of the abanico is often the rimshot plus one additional stroke on 1+, usually on the large timbal. Or you play a double abanico.
Would you in that case typically start with an open tone too (wherever your first stroke is), or does it just depend on the arrangement?
As a rule, rhythmic patterns, accents or unison passages should be marked with open tones, either on the macho, the hembra, or both of them alternating. Sometimes double stops (both hands on both drums) are the best solution. On the bongo, you use the open tone on the hembra. Anything else wouldn't carry, although I would not exclude that there may be situations that allow you to experiment. Always consider the music and your fellow musicians. You can also make suggestions and work out something that is not standard.
Thomas