I believe the "higher-end" Trinitron does feature YUV component input - one component, three RCA, and two S-Video are the inputs I remember from memory, but it's been a while since I've seen one, so I reserve the right to be wrong about that.
Any functional CRT TV will work with the NES Zapper or other lightguns, so that's not really much of a question.
Not entirely sure what it is you mean by "sync tolerance" - sync adjust is not something that can easily be handled with analog signals, and is more a concern with digital TVs with display lag.
I don't think you're going to find a consumer-level CRT TV that handles both NTSC and PAL, that's more a professional requirement - the best you can reasonably expect to do is throw in a converter box at some point in the signal chain.