I forgot to add the reasons behind the changes
From Index Astartes:
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Limited Resources: A Flesh Tearers forces tend to have little in the way of armoured vehicles, only one tank (Predator, Whirlwind, Vindicator or Land Raider) may be chosen for each detachment. You are, however, unlimited in the number of Rhinos and Razorbacks you may choose to take.
The Call of the Black Rage: Flesh Tearers suffer from the genetic defect of the Black Rage even more so than the other Blood Angels successor Chapters.
Death Company Dreadnoughts: There are many renowned heroes within the ranks of the Flesh Tearers, and whilst the Sanguinary Priests have had some successes in restraining the Black Rage of the ancient warriors entombed within the Dreadnought hulls, it is inevitable that, sooner or later, they will succumb to Sanguinius' Pain.
Only one Dreadnought or Furioso Dreadnought (one in total not one of each) may be taken within a Flesh Tearers army. However, you may take as many Death Company Dreadnoughts as you wish, within the normal limitations of the Force Organisation chart and the points value of the army.
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