As a recent first time cruiser on MSC and status matched into Black, I'll share my 0.02 currency of your choice. This was Port Canaveral on the Divina, for reference.
We enjoyed the priority embarkation, and complementary specialty restaurant. The rest really didn't thrill me on way or the other.
The suggestion I would make, is somehow tailor an ala cart system. I don't need or want a lot of perks, but would definitely enjoy a handful of specific ones. Heck, I'd probably give up all the perks for an increase on the 5% cruise discount, but I'd still want priority boarding.