Warframe has just released a new update that also comes with all new melee riven mods. For me this is a complete game changer as it opens up a lot of new ways to play the game and for veteran players it also brings something new for them to grind for and to design new builds around.
Riven mods for those who may not have played for a while were previously only for primary and secondary weapons and the rivens themselves add multiple stats to a weapon rather than just having one, however you can also get negative stats.
Along with this every riven you get will have random stats so you have to hope to get something good but if you don't there is always the option to re-roll to get a new set of stats, however you will have to farm to get the parts to re-roll.
I think melee rivens could be a complete game changer as melee weapons can already be stronger than any other weapon type, so adding rivens for melee can make the already strong weapons be very useful in the late game. Then if you have a melee weapon you have always wanted to use in the late game but it wasn't quite strong enough with a riven it now can be, which I think is really cool.
The rivens will also work in the same way they do in other categories where the weakest weapons will get the highest stat boosts and the strongest weapons will get the lowest stat boosts just to make sure things don't become stupidly strong.
I personal haven't managed to get a melee riven yet however I am definitely going to be trying and it has really hyped me back up to play warframe regularly again, if any of you have got a melee riven I would love to take a look.