I'm familiar with Sev's Instosis, I've been in and out of this game for years now, I'll play for a while, then get bored with it, periodically one of the updates would leave the game in a pretty broken state and I would be frustrated. I still think this game has tremendous potential, but is short by about 400 cards to be a mature game, currently with this version, the meta game is getting complex enough to be worth a little longer than I normally play it.
I'm the author of this beast after all:
Which I have a 70% WR against FGs, CuCn has a 66%, but most people who play it like most of the decks in this game only get around 30 to 40%. If you know all the AI rules, this deck can rock, if you don't then you lose, it's all about the meta game:
Now onto Instosis and your variant:
Instosis had a problem with jamming up once and a while too, but not nearly so bad. Just once and a while the dragon would be the last card and your hand is full, or you started out with a handful of hourglasses and dials and all the pillars were at the bottom. The most frustrating of course was when your combo showed up in your hand early on, forcing you to not have the room for delay or deck burn needed. Periodically, a player would end up having the bleed a little extra time quantum to get that last sundial for one more turn. Also, Instosis had auto-skips for efficiency, but could technically win against the vast majority of FG. It's 70% WR was against all FGs, it would drop down to 55% or 60% if you did auto-skips.
With your deck, you have 1 more card to get the full combo out:
Chimera(optional)+Dragon+Tosis+SkyDive+4SoRs (Back when SoRs where any colored) where you have Chimera(optional)+Dragon+2Tosis+SkyDive+3SoRs+Twin
That's one additional card you need to complete the combo increasing the rate of not getting it in time.
As well as not being able to fit in your hand at times making it impossible to achieve and increased chance of your deck jamming.
The combo also requires additional aether, life, and time quanta, which means decreased chance of getting the combo to work against quanta manipulation decks.
This all means your deck is no where near as close to the win rate Instosis had.
Now if you are running -1 hourglass +1 chimera that makes sense, it would increase the fragility of the deck in another regard, but not as much as the -1 tower + chimera build I tested with, it probably wins better than what I last saw as the option playing. It is a notable variant for the concept; just not practical compared to others.