This is not a "system"
These are just a few ways that you can integrate SRT into your DdRT session. It is implied that DdRT is always available within an SRT session or that techniques implemented like the SCAM give mechanical advantage on SRT. Realistically, DdRT is much easier on the body and lends itself to longevity for the climber, it is an elegant climbing style. But SRT is often appropriate and more effective for the situation, like open ascending or redirecting through a canopy.
You will need to go out and practice climb this stuff multiple times and experiment with it, then you'll find ways to integrate this into your production climbing at work.
questions:
if I'm climbing DdRT, can I use an SRT redirect? yes
why climb on a floating block/pulley? for removals, with spurs, this is nice, and conserves a lot of energy. for pruning, it saves the cambium and conserves a lot of energy. With a basal anchor, it is lowerable without the need to isolate.
do I need to use two foot ascenders all the time? no, you can do that for the 60' initial descent taking big steps, then switch to DdRT and forget you have them. You could also spike your line at any time creating two static legs and climb with both foot ascenders. But if you wanted to, you could SRT the whole time on the two static legs too. Or you could just use one foot ascender. Or/and you could use a knee ascender. Or you can climb pure basic SRT and pretend none of this exists.
do I have to risk my life using a knot block on a pulley? no, don't do that, esp because Evo will wet himself. It is nice for that final zing out of the tree though. But if you're climbing DdRT on a rigging ring or friction saver and want to switch, then tie a stopper with a long tail and run it up there, work your SRT thing, then pull it back and go back to DdRT again. Or spike your line with a midline knot, clip the tail and work SRT, then clip back in and reset. Or tie an alpine butterfly canopy anchor, run it up there and switch to SRT, return later and pull it down, clip in and get back to DdRT.
do I have to do everything you pictured, in sequence? no, pick any single thing you want whatever technique seems useful in order to integrate DdRT and SRT into a single climb and do whatever fits your need. I showed 5 things you can combine or use independently.
can I use any kind of SRT redirect variation I want to? yeah, there's probably 20 or more. do whatever fits your need.
can my anchor be remotely retrievable? yeah
do I need a pulley? do I need a floating block? no. you can do most of this stuff while natural crotching
is this a hack? hm. It's reusing various SRT and DdRT fundamental techniques in an incremental fashion in appropriate situations to enable climbing in a way that best suits the situation regardless of what "system" you're "using". Think modular.
do I need to rec climb practice this stuff to get any practical use out of it? yeah
do I really need to know any of this to do my job? nah man, you're good.