The idea behind it was to get the strongest brake, which you can make (to my knowledge, only the Gustav M calipers on the Diretissima master cylinders would be even stronger). The Trickstuff master cylinders have the highest leverage ratio on the market, and the Hope V4 have the biggest piston diameters (18mm+16mm).
In comparison: Diretissima caliper has 17+14 Magura MT7 has 17+17
Combining Trickstuff and Hope will create the most powerful brake and I must say, the mod did not disappoint! The brake has outstanding modulation and the ultimate brake power is just crazy high. You need a lot less power to get the same braking force as with other brakes, or you can brake a lot harder with same finger force. This means you safe a lot of energy during hard rides, and especially you can concentrate on other things than your fingers getting tired. It was not very easy to find the proper seals for the V4 calipers and it took a few attemps to have it preoperly bled, but in the end it paid off to my full content.
The MT7 is strong (I ride it on my other bikes), the Diretissima is a lot strnonger with a nicer touch and lever feel already, and the Trickstuff/Hope mix is another league. I am not exaggerating!
Interesting, I run MT7s and Direttissima on my bikes (big heavy dude here ), and so far I haven't been disappointed by either of them. Not sure about power but with the way the direttissima deliver, it feels they are much more powerful (MT7 with HC3 levers)
I have a spare MT7 caliper, but not a Direttissima spare lever haha (not sure how much they retail, but probably quite a lot :lol
The Diretissima levers retail for 330€ for the pair (note: levers only, no caliper and no fittings). The Magura do have enough power for anything one could ask for. They perfom very well, and they are also light. However, they do not look "high-end" to me, and (to be honest) I wanted something crazy, which may not make sense, because it is expensive and it is not ligher. But I like the extra power, since I can safe some energy. I do not need to worry about cramping arms anymore. It is just amazing, how little you have to think about braking with those. They just do what you want with tiny effort. Just as good, as I dreamed them to be, and better than I actually expected. I really didnt know, how good the mis-match would work out, and that´s why I am so happy. I´d really like to read a review about this brake.