Nothing much to say. I've been through a few iterations of this build. There's a few 1-of tech cards that I like, specifically Quillbolt Hedgehog, that works amazing with this deck. You can essentially swap out the 1-ofs (except Plaguespreader) to run the side deck cards. You can also cut them out completely to move to deck to 41/42 cards. The Spright engine has insane synergy with Adamancipators, allowing you to go either Sprind/Elf/Gigantic or go for your Dragite/Crystal Wing board early.
Notable cards to consider:
1. IP: Masquerena (initially part of the Halq build, but without Halq it's not that viable. Necessary if you go Borreload)
2.a Borreload Savage Dragon (I run Crystal Wing instead but this is a good extra deck option if you run Masquerena)
2.b Draco Berserker of the Tenyi (EEV target. Possible option over Crystal Wing/something else. Definitely worth slot consideration)
3. Gigantic Spright (2 can be run if you decide to drop Chengying/other)
4. Coral Dragon/Herald of the Arc Light (2 strong synchros that are easily achievable. Coral is a +1 and is essential later when the Icejade synchro releases in the set next year)
5. Spright Starter/Jet/Smasher (all possible cards to add depending on your meta where you live. I find the current ratios of Spright cards to be perfect so far though).
6. Cat Shark (Rank 2 that can be used to stall. Pretty good with getting EEV plays off, if you side in EEV. No space currently but it's an interesting extra deck choice)
7. Eradicator Epidemic Virus (If you decide to run Borreload/Draco Berserker and/or another Gigantic Spright and/or Cat Shark, it's definitely viable. Meta based but currently too many cards need to be dedicated to running it, so it's just a possible option if you want to try)
Damn. Guess I did have much to say, haha.