Hi and welcome.
Crusaders aren't tanks, they are dps/support and popular for their short attacks and ability to dodge quickly as opposed to the more in-your-face dps of the berserker
Devs have expressed that the current race/class combos are the only ones that make sense, largely for lore reasons. I did a rant a while back kind of dismantling that, and the newest patch notes show devs are able to change their minds about stuff. Also, the new patch notes state the sader is getting an aggro-increase, so we may end up being tanks afterall.
Bless Online and Bless Unleashed are 2 seperate games made by different developers, using recycled graphic and sound assets handed down by Neowiz after BO died. Using the same name was unfortunate. BO never got finished because they had plans bigger than their budget.
Bless Unleashed also isn't quite finished, but there is lots to do and we are experiencing regular progress in development.
In early levels the game can be as fast as you make it. There are no level requirements for gear, so get yourself a A-grade weapon from the player market and you'll one-shot everything you run into until you're level 20.
Yes, dungeons and bosses have mechanics that you will have to know if you are at the appropriate power level. Once your gear score gets high enough you can OP your way through most fights without worrying about tactics. Technically, solo-ing field bosses is always possible, because the game relies very heavily on the dodge and attack combo mechanics. If you know the telegraphs and can know your toon's moves well, you can whittle even the toughest bosses down one 1HP at a time, it just takes forever.
Because the game was made with a role-less class system (no tank/healer/dps holy trinity), the mechanics emphasize everyone being responsible for their own survival, so even just pure damage classes can't just mash buttons. You still have to know when to dodge and not to stand in stupid
Welcome to Bless Unleashed :) We're glad to have you
devtrackers.gg