this is just your opinion dude; 33% uptime on circling against 100% 135% 2hit/sec that can go even higher to 2,5/sec or more with mostrance since now at 300sec scroll it is fair worth to buy/use , filler is filler for a reason; if you class focus on burst with low AOE go falconer; if you class is have already huge aoe; there is no need to go there.
i won’t go in which is better like you intended to do since here is not to place to talk about builds but a place to talk about ktos changes and for me i acknowledge the problems that may arise taking it as filler like you pointed out; but not everyone plays it as META and some may play because they like it; and now they have a good class to takes as “FILLER” if they feel the need to, since the class out offer at least the basic tools to work itself; not that those tools would be super stronger or the strongest.
edit:
@Valfor i myself have buildup a qs3 falconer3, with the intend to take hacka or sr as rank 9, just for fun: why? because i want a falconer3 mounted and like me many other players who played this since cb, needs something to keep going, and most of us like to create experiment builds for fun, so i made it and waiting for it and now for example with this new changes i could giveup qs3 and focus on sr1 as filler for rank 9 and takes other classes at ranks 2-4;
like i wrote; it does not need to be the best; many players here likes to experiment different types of builds on their alts, that they find it fun, and having the possibility to take sr1, mainly a mounted class as filler, is a very nice option, for me and many others as well, but i’m not saying that will work or will become the greatest thing ever, is just a option.
people like me who already played this since the start, already had a stronger up to date char, and keep playing for most of the time is doing with alt’s, testing-experiments new gameplays and we as players are without doubt happy about this option.