That depends entirely upon the language in question. For example, in German, the umlauts above a vowel denote separate sounds. When written in a format that does not allow them, the letter "e" follows the vowel in question. For that particular language, accent marks would be a strange and foreign addition to any word.
Of course, since this is an alien and fantasy species, living on an alien and fantastic other world, any discourse of the possible characteristics of their language is academic at best. Since you weren't sitting within earshot of nameless & myself when compiling these names, you have no way to know what the "proper" pronunciation really is, other than your own imagination when puzzling out what you can see in your browser window. Phonetic conglomerates were made, with rationale given to possible linguistic structures of the Elven language, based on what was already established for that species within the confines of the particular game world. The nonstandard-English characters used in the example names were chosen because they mapped to real-world languages that used those very same characters for the sounds selected as the Elven phonemes & conglomerates. Since the Elven language in this setting has already been established as being quite complex & specific in design, such distinct demarcation, and indeed transliteration, of sounds made simple sense. To say that they were chosen "because Tolkien did it," is fallacious. Admittedly, the use of umlauts adds to an alien look & "feel" to the names, which works quite well for Midianite Elves.
Then again, it's a rather random selection of names for a game, and doesn't merit becomming upset over. Those whose browsers do not allow them to see these alternate characters (perhaps with a question mark or blank rectangle in their place) are likely wondering what it is we are even discussing.
