Oman is quite the outlier and may be my favourite country in the region. Qaboos did well with the country, modernizing it from a very poor start, but most notable for me where his contributions to its culture. It stands out for preserving its architectural history, and Qaboos always spent a ton on arts and culture. Quite fitting and symbolic that his pick for new Sultan is fhe culture/héritage Minister, shows he wants the tradition to live on.
Politically Oman has been always smart enough to walk a tight rope that allowed independence within the GCC, while preserving good ties with everyone in the region. Highly likely this will continue.