Lucifer-Engines easily could be an army special rule:

For initiating an Assault i'm glad to have every cm of extra speed i get to get units in base-to-base contact. An extra +5cm speed for Rhinos and Razorbacks is very useful in this circumstances. For the other Rhino-hulled vehicles it isn't as useful i concur (with my proposal above).

Anyone calculated the statistiscs of the possibility of heavier casualties for a BP Attack of Marines in Rhinos and Marines out of Rhinos but touching them?

Loaded:
Overall average - 1/3 killed Rhino, 1/3 killed SM

Unloaded:
Overall average - 1/3 killed Rhino, 1/2 killed SM

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Edit: It appears everyone beat me to it.

The fact remains though that you don't tend to leave marines loaded up, it's asking for trouble, this equation only covers on situation.

....However it can be truly said that the specific design of rhino used by the blood angels - known as the lucifer pattern, for the techmarine who pioneered its creation - is unique to the chapter

The Blood angel Rhino incorpates many of the design upgrades present in the baal predator in order to greatly increase the Rhino's speed and mobility. Although thes alterations have been relatively recent , the chapter's techmarines had long experimented with differant methods of overcharging thier rhino's engines, but all such trials proved to unreliable at best and diastrous at worst it wasn't until the unique challenges of the Second war of Armageddon forced a new approach that the attempt was maded toe merge the traditional design with that of the baal predator. So sucessfull was the altered configuration that it was swiftly rolled ou the the chapter entire complement of Rhinos as well as other tanks founded on the same design such as the vidicator and the razorback