no, no mate....the environment is ideal to create such emulations. you would be amazed at the extraordinary complexity and sophistication to which the environment has been put.
you need to have an understanding of what you are working with. you can set up midi monitors or simply record the information from your roland unit. it is communicating with logic via midi and this information can be routed and transformed within logic to trigger virtually anything. you can even control tempo with your TD-10 if you set it up to do so. you could have it trigger a flute phrase, jump to a different part of the song, mute half your tracks and probably perform a handstand if you wanted it to - but you have to know what info you have and how to get the sound you want.
in order to help you (and it seems i have committed myself to doing that), i need to know what information you are generating and what sound you have that should be triggered.
let's take your example:
you hit the high hat with a closed sound and then open the hat to let it sizzle.
you could make an exs instrument that triggers both an open and closed sound and using the foot pedal crossfades between the 2 samples. you would not need an transformer to do that, you could easily do this just within the matrix of the exs instrument.
or, you could use these conditions to select an exs instrument or sample within your first exs instrument of that precise effect.
Not only is the MIDI note changed to allow for the different open hi-hat samples but somehow those notes must turn on without a pad hit and be at a certain volume
this is very easy to do, but there is more than one way to do it, and that's why we ℹ need more information about what info you want to have manipulate the sound or choose a sample. i don't know if you have samples for these or if you have samples with which you want to emulate the effect.
the fundamental principle is: you have information going into logic with which you can manipulate a sound, or choose a sound.