Let me preface this by saying that I had not played Warbucks myself prior to his retirement. I can only assume there might be detractors who accost me for it, but I feel I must speak up.
I am an avid fan of Klei, and even more of Don't Starve. I feel that as a company, Klei generally makes pretty good decisions, especially compared to several others nowadays. However, I feel strongly against the general removal of content already introduced to a game, especially a character. I feel that it leaves a metaphorical hole in the feel of the world. Despite the relatively lackluster mechanics of Warbucks, or the characteristics that I've gathered some online would complain or worse about, I am of the opinion his absolute removal from the game is a bad decision.
I understand that as a company, Klei must make decisions that may be seen as negative, but I do not believe this one was warranted. I feel Warbucks could still have been just retooled to a point the general consensus would have been agreeable. I am not going to drop the game or despise Klei for this choice, and I understand that there are mods to reenable him in the game, which even they have suggested. I do wholeheartedly hope however, that they go back on their decision and reintroduce him somehow. Thanks for reading, and rock on anyways, Klei.
An addendum in light of the Klei post in the main update thread: I can understand and accept the reasoning of uninteresting character and the decision that the development time wasn't worth it for him. I still don't entirely agree, but it is how it is. If anyone at Klei reads this, I still thank you for the effort spent on Don't Starve, Hamlet, and Together. I hotly anticipate your upcoming content, and sincerely hope you guys and gals can find some extra time to reintroduce Warbucks in the future. I believe that while Hamlet is indeed still in Early Access, and as such, content and features are liable to be removed if needed, an entire character is a little more than just a feature. Hope everything works out well.