Assuming that we all already know about the downsides of being on Wayfinder (from A like AH, where nothing useful might be found to Z like Zonixx´s guild, we miss a high level guild on the server!). Assuming there are upsides as well - which upsides do you know?
My list is short, but I really like Wayfinder for this:
+ Not too overcrowded.
+ Less lag.
+ No problems to enter server.
+ No (or significantly less) spam bots (trades, requests to join groups, guilds, etc.).
+ More familiarity with other high-up players. It is easier to keep track of them and their progess throughout DDO.