[color:"orange"]BD demo: 3 classes each with 1 tree and 3 skills per tree on average, but you can make custom hybrids of those 3 classes.[/color]
Actually, it is classless (other than skill categorization). Your initial skill type selection determines your starting skills, but you can learn skills by finding teachers or books (both included in the demo).
[color:"orange"]You can also put points in the ability scores on the inventory screen(! ?) but you get no message to do so.[/color]
Apparently you did not read the short tutorial that came up the first time you opened your inventory. Also, the inventory button glows red when you have unassigned stat points.
[color:"orange"]BD plays like diablo2, but with little action, fewer options, fewer choices, less tactics[/color]
Excuse me? BD has a much more flexible skill system, with classless characters you can develop any way you choose. Even the limited quests in the demo are more than the 'go-kill-this' or 'find-this-item' quests in D2.