Well I haven't been to many that many arenas, so I'll take your word for it.
I didn't find anything about the remodeled suites but this from wiki:
The Rose Garden is a precast concrete-framed structure with a roof made up of skeletal steel. The arena structure encloses a total of over 785,000 square feet (72,900 m2), on eight levels, five of which are open to the public. The building is 140 feet (43 m), from the event floor to the pinnacle of the saddle-shaped roof.[6] The arena includes a 60 by 40 feet (18 m × 12 m) permanent stage, and a 200 by 85 feet (61 m × 26 m) ice rink.[14]
The building is composed of over 48,000 cubic yards (37,000 m3) of concrete, and over 9,700 short tons (8,800 t) of steel. The exterior is composed of over 29,000 square feet (2,700 m2) of glass, 17,500 square feet (1,630 m2) of plaster, 52,000 square feet (4,800 m2) of architectural precast, 39,000 square feet (3,600 m2) of insulation, and 13,654 square feet (1,268.5 m2) of steel louvres.[6][15]
The building, designed by architecture firm Ellerbe Becket, has been criticized by some in Portland's architectural community. A survey of local architects and planners was conducted by the Portland Tribune, and subsequently the Rose Garden was listed among the five ugliest buildings in the city.