I'd definitely recommend these ones as must haves:
IC-LoRA Outpaint by oumoumad - (turns 4:3 img/vid into 16:9)
Edit Anything by Alissonerdx - Still a WiP, but can edit most things in a video using a prompt
SYSTMS-FLW-IC-LORA by systms (see video)- Allows for much more aggressive/dynamic/fluid scene transitions between two or more videos (can be used for looping too) and even works with img2vid by inserting a gray colored picture between two different images using a first-middle-last img2vid guide node (ComfyUI).
This LoRA absolutely blows away the default LTX first-middle-last frame capabilities, which only work well when the two images are pretty closely resembling each other. If they are too different, LTX just hard fades or cuts directly to the second image scene, which is super boring. I want the scene to actively morph and change from image to image (even if it's unrealistic).
For the video I used 5 images, 3 reference images with 2 gray images inserted between them (241 frames total, so each one was offset by 60 frames: 0, 60, 120, 180 and -1 for the last image frame). And it blends them together much better than the default way LTX does it. It's not perfect, but it's definitely fun to play around with. I miss being able to have this kind of aggressive multi-image transition that I used to get with the WAN 2.1 5b fun inpaint model, and this LoRA brings some of that functionality to LTX 2.3. I also didn't direct the video at all with the prompt, I just described the character and added no instructions for motion, movement etc. It did it all on it's own.
OmniNFT-RL-Lora by Kijai - This is just a nice LoRA that adds scene details and makes your text2video videos look so much better (and helps with audio too). Doesn't seem to do anything with I2V, but is a great LoRA to just turn on by default when doing T2V, as it will basically improve everything with no downsides (that I know of). I stack it with the 19b IC detailer LoRA to really sharpen thing up.
LTX-2 VBVR LoRA by LiconStudio - This one basically aims to improve LTX 2.3's ability to do physics and reasoning more accurately (falling objects, object trajectory, object collision etc). Works only with img2vid.
All of these are on HuggingFace.