They had the excuse regarding momentum that they dont want to force people to use mobility for dmg increase, that its bad for certain mechanics etc. I think thats a good point but as someone who likes momentum playstyle i would make changes to fel rush to bring it back.
Split fel rush to two versions. First would be the same, second would keep you in place. Make it just a cool animation like blade dance, your character rushes forward and goes back dealing dmg in two parts. Both rushes share cd and trigger momentum so propably 90% of players would use a modifier macro for it.
Aaaand ofc buff momentum to make it better than our beloved "throw and forget" nemesis again.