I counted up the slots, and yes it is too much so I'm not sure how it would work exactly but it gives an idea of what it would be like. I did say that there was probably too much slots at the bottom of my post.
I fixed the slots hopefully this is more like what I was going for, I wanted unique things for each rank but It seems that if I were to go any higher, it would be too many.
Here's what I'd be thinking as it is still WAY too many for the cheaper ranks: Premium: Would receive an extra 2 slots in ender chest. Sponsor: Would receive an extra 4 slots in ender chest. VIP: Would receive an extra 6 slots in ender chest. MVP: Would receive an extra 8 slots in ender chest. Elite: Would receive a extra 10 slots in ender chest. Supreme: Would receive an extra 12 slots in ender chest. God: Would receive an extra 15 slots in ender chest. Titan: Would receive an extra 18 slots in ender chest.
Thing is, in a hot bar you have 9 slots, a whole inventory not including hot bar is 27, meaning the maximum space in a double chest is 54, For the titan and god the E-chest would be like a double chest. I was going by 9's so you wouldn't have this weird number of slots.
Titans pay 250 dollars they should not get like 3 slots 27 is good I really want pvs. If you have a rare item you wanna store put it in a pv or if about to die and have a really good sword or something do /pv and put it in!
100% support i like this Idea Because i Have filled my Echest on ALL servers and I want this to be added