Ill try not to be a grump. But two issues really.
One, engineer can cheat nearly anything using the preserve momentum glitch, or whatever you want to call it. (build sentry on teleport destination, fall into teleport, get 1000000000 u/s, pick up sentry). Which makes nearly most jumps as engineer trivial, or already impossible to begin with.
Two, ideas are fine and all but there is quite a lot of work, and 'translation' to make anything work in hammer. This may be less of an issue if you understand a bit of mapping.
But anyway there have been a few attempts at engineer maps. From memory there was a mapper here by the name of Emmett, maybe get in contact with him
