The HS33 with its top center hose output is the worst case. The after market block won't really help
Caliper with the usual top right output are usable with a good hose/cable routing.
Knowing the lack of stiffness of the original post 2013 levers and dual pivot caliper (the old one, seems that the current one are worse), I am really astonished that the Magura doesn't provide better braking.
Note that the Magura do not have enough reach and need the adapter that lower the mounting bolt, so you could as well use other short reach road calipers with enough space for 35mm tires (the eeBrakes aren't specified for 35mm tires and nevertheless seem to accept 35mm tires).
There are several excellent short reach road dual pivot caliper not very expensive like the latest Ultegra that you could try.