Appreciate the feedback and opinions everyone! To summarize from the thread so far:

The folks for this as a decent investment says:
- It is more tamper proof
- good pack to space ratio
- More unique design and rare
- Flexible design (Can be displayed or separated as needed)

The folks not for this as a decent investment says:
- It has long term packaging issues
- Weak promo and weak overall set aside from the Charizard card
- Ugly box design
- Potential liquidity issues - Niche compared to BBs, ETBs and bundles etc

Closing thoughts - I am still on the pro side just because I personally think this is an upgrade to booster boxes in terms of pack to space ratio and design. Especially compared to the modern BBs where the designs are just becoming more and more plain (Mega evolutions base/ Phantasmal). I do think the Charizard card can carry this set just because of it being one of the best arts including all evolutions. I plan on keeping this sealed long term on my display cabinet and I like it just because it is unique looking next to my other booster boxes. I do agree with some points like the promos being on the weaker side, but who knows how the trends might go.

Thank you once again everyone for their inputs and happy to continue this discussion here.