These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Skylark Series
Canon Sue: Seaton is this — his interests, abilities and values are all either those of Smith himself greatly exaggerated, or ideals Smith held. (Indeed, all four of the main "good" Earth-human characters are Sued versions of real people — Dorothy Vaneman of Smith's wife, and the Cranes of his friends Dr Carl Garby and Lee Garby, Carl's wife who helped Smith with the "romantic" aspects of the first book.)
Unlike the Mardonalians, and the villains generally in the series, the Kondalians are not Absolute Xenophobes, but willing to co-operate peacefully with other planets. That said, they are typically portrayed as a species of Proud Warrior Race Guys, with a strong whiff of Barsoom. They're very flawed good guys, and they do occasionally get called out on their warmongering by the human protagonists.