Exterior elevation / design help for an addition

hello friends!

So I've got an addition in the works and i have some elevation issues (i dont want my driveway sloping into my garage) thus I have choices/tradeoffs to make as it relates to fitting it into the design of the existing home.

options im aware of:

1. (see picture) do what the architect has and just make it about 1-2 feet higher than my current roof line, i could leave the windows higher or try and lower them to match existing windows, either way the thing would be taller

2. keep the roof line and gutters the same as the exiting house and vault the ceiling on the inside, in other words have 6.5-7 ft walls but a vaulted ceiling.

note that the house is brick and the addition plans to be siding. Im really torn, help