My feelings about instrumental solos in Salsa...
Personally, I like to improvise since I came to Salsa from a jazz background. Salsa and jazz are like two peas in a pod -- they have much in common and both have informed each other.
But... unless ( as some have already mentioned ) it's a concert or a special kind of event then I think instrumental improvisation should be limited. I agree that many music directors should be more aware of this. One singer I work with goes overboard -- he wants trumpet and trombone solos on almost every song. We don't like that so much. Playing a brass instrument in a Salsa band is very demanding and we need to conserve our chops for the hard parts, mambos, moña's, etc. If I get to play one brief solo per set then I'm happy.
If there is a truly great soloist in a band then they should be featured with an "open" (extended) solo at least once during the set... people like Luis Aquino, Jimmy Bosch, Papo Lucca, Piro Rodriguez, Ricky Marrero and many others. These kind of players can really excite things up and if the dancers don't like it then they just don't know what they are missing!
There are not many venues nowadays where people go as much to dance as to appreciate the music and the musicians. One place in New York City still fills this void, the Julia De Burgos Latino Cultural Center (Taller Boricua) in East Harlem. On Wednesday nights you will see bands like the Mambo Legends Orchestra, Orchesta Broadway, Jimmy Delgado ( www.youtube.com/watch?v=wcu9YZhAoHc&feature=related ). If you're in New York City it's definitely worth checking out. The center is in danger of shutting down due to financial reasons, which would be a shame.
Thanks for the tip! Orquesta Broadway I didn't even realise they were still around!