BTMÂ its great to found dependencies. It is very detailed.
BTM should allow to group components into tiers, so the user can see the agregated time of all that grouped components.
For example, for SOA BTM shows components like JCA Adapters, BPEL, SCA. It would be nice to group all these into a SOA tier, and aggregate response times. Then if the user observes some problem in this SOA tier, BTM should graphically disincorporated the internal componets for greater detail. Like zooming in/out in each user defined tier.