Nobody has a continual pipeline of top talent. Nobody.
However, everyone has a continual pipeline of "prospects" that can, and mostly should be used to acquire proven MLB talent.
You'd end up regretting maybe 1 in 10 of those deals, maybe less.
Because maybe 1 in 10 of those shiny prospects ever amounts to more than the guy they were traded for.
They're initially cheaper, which is the real reason they're hoarded.