I wouldn't rule out Jishnu's Radiance from top 3, thats third for sure... Blade: Hi is likely 4th behind Jishnu.
Anyway, I think Rudra's Storm suffers from what I like to call "SATA Weakness". the WS itself is purposefully weaker because we have SATA, so most/all WS's we get have laughably low fTP mods, even though Dagger is the weakest weapon in the game, and in theory should have WSs with the highest fTP mods, this is again, because of SA and TA.
Rudra's though can be pretty good unstacked, but not at 100% TP, 300% though, it'd probably do semi-decent unstacked. However, i think we deserve to keep our Aftermath up without sacrificing DMG. (so do all DD, just as WAR and MNK get to now)
I mean, Ideally you can SA or TA it, but lets face reality, how often can you do things "Ideally"? Its very rare for me these days that i can easily land a SA, TA is no problem, but its also much weaker, for one Favoring AGI for TA DMG over DEX (Rudra's mod) leads to lesser damage (by a very noticeable extent) when compared to SA just stacking the DEX.
Sacrifices i don't think we should have to make. (nor any DD job with their WS's)
Basically, I believe you can make a WS powerful unstacked and still make it not over-powered Stacked. Look at Dancing Edge and Evisceration, Both decently powerful Weaponskills Stacked and Unstacked, Is it too hard/too much to ask Rudra's at least beat Evisc/DE @ 100%TP?
As far as Cloudsplitter, Camlanns, and Quietus go, I'm willing to suspect those are on the list of WS planned for updates, and i think those also should be looked into being more powerful, i agree.
ANYWAY, As far as my Solution to it? I think Rudra's should be reworked as follows:
"Description: Deals Heavy damage and weighs target down. Chance of Critical hit Varies with TP
Modifiers: 60% DEX
fTP: 5.0"
(While we're at it, do this for Mercy Stroke too, keep Mercy Stroke STR mod though)
Rudra's, at 300% TP, is 5.25fTP, I think making it a flat base of 5.0 and allowing it to crit will make it superior to Evisc/DE Unstacked, but at the same time, its not going to break the WS, and its not any stronger than a 300% TP Rudras is right now. It creates a powerful unstacked WS, while keeping it no more powerful than it is right now, thus not breaking it.
This is my opinion. THF is a very limited job, small boosts like this will at least help it make some headway into being acceptable, if only a little.