Suspect our time to melee will drop considerably once we can put up 3 rolls. Unless we get PR duration +++ in gear or merits, it's going to be a challenge to engage with mobs.
The biggest disadvantage we have to DNC and THF is not the fact that they can out damage a COR. It's the fact they can out evade COR. Which means for a number of mobs, they can solo or low man tank face to face. That makes meleeing with a good dagger far more important for them.
For COR, the opportunities to take melee swings is pretty finite. Not sure I'd go through an arduous VWNM process for that dagger if COR was my only job that can use it.
SE haven't mention any detail info about 3 rolls, so I wouldn't worry about it atm. Maybe it's just a JA with 15min recast time, so every 15 min you can do extra roll and that's it.
Plenty of melee jobs can't out eva THF and DNC, but they still has access to good melee weapons. You don't really need the ability to eva tank mobs to have a good weapon XD
attack speed of COR is just pretty terrible compare with THF and DNC.
I don't know that I'd say "terrible"...
Zelus Tiara, Twilight Belt, Ocelot hands and legs, aurore/dusk feet = 24% haste for not a crazy-unreasonable set. And you could even squeeze out more haste with Tiercel necklace and Dusk+1 hands. Add a Suppa to the mix, Dual Wield III from /NIN (same tier as THF gets)... that's not bad. A THF isn't going to be using any extra enhance DW gear other than 3% from Raider's Boomerang. And COR can use Blitzer's Roll, which is actually really effective for DW melee.
Personally I have 25%(dusk feet+1), suppa and twilight knife offhand, and eponas for double/triple attack. I sometimes go kill some NM with friend with Evi setup, and really, COR's attack speed is terrible compare with THF NIN DNC MNK in same pt even with 25% haste/twilight knife ;(
There are a couple of reasons for this.
1. If I use QD to gain TP, the JA animation will reset attack delay(I think), losing a few attack round. Compare with jobs that just straight melee and ws, using a JA once a while slows things down. With melee atma setup, QD dmg is barely worth anything, it's just for gaining TP that's it.
In fact if you're in high haste situation with a BRD and haste samba, I'm not even sure if using QD is viable, it's possible to lose more than you gain if attack delay capped.
2. THF and DNC not just have more DW gear, but also has massive amount of Triple attack/double attack. THF has triple attack job trait, plus triplus dagger/AF3+2 head, and they can merit it. DNC has Saber dance to enhance DA, which beat the **** out of average number DA roll. DNC also has way more DW gear, and 10% haste samba.
I'm not saying it's not doable, personally I think it's fun to melee and I like to melee more than shoot stuff(I lv this job up to 75 pre-abyssea in sword melee style), and I do believe melee is always intended to be part of this job when SE made it. But it's just one aspect that COR doesn't excel atm. On the other hand in terms of ranged magical dmg dealing ability, COR is probably on the top....you got BLM, SMN and SCH that can do the same, but BLM also takes longer to generate enough MP/casting time and it generate lots of enmity and not spammable.
I'm not sure how effective that additional effect is. If that dagger can instantly deal 80% HP dmg of the mob(something like twilight scythe can proc death on the mob), maybe it's worth using against none-NM mobs. Other wise it probably not gonna make a big difference unless you're meleeing in Abyssea.