1. sturdy
2. lowest possible angle
3. highest possible angle
4. the leg connection design, I had few experience with other brand tripod all failed on the leg which sand went into the connection cause the failure
5. size
6. weight
7. cost
FLM provided various tripod mat fullfill yours requirements ..
and as for now, am using below models and available for sale
another travel tripod to be recommended compare to previous sharing a Travel Tripod … Fotopro X4i-E. which can be keep shorter, cheaper but which is not carbon fibre .
I use the aluminium alloy similar version before for my waterfall testing