#10 - This is only Early Access. We know that they will be adding more races and classes. I think the plan is all PHB classes, so yes, we should eventually be able to play as a Druid.

#11, this is actually per D&D 5e. You do not need to have a Rogue to pick locks or disarm traps. But... at higher levels, they have have a much better chance of success. I haven't seen it implemented here, but Rogues are supposed to get "Expertise", whereby they pick a couple skills and get double the proficiency bonus (which increases as you level).
So, Joe Fighter can pick up Thieves Tools and use them without proficiency, but that means he only gets his DEX bonus/penalty.
Tara the Thief on the other hand has proficiency with Thieves Tools and also choose Expertise with Thieves Tools. So she would get DEX + (2 * Proficiency Bonus). At first through 4th that would be an extra +4. By the time Tara and Joe are both level 10, that would be an extra +8.
So, the fixes that are needed here, are for Larian to implement Expertise (assuming they have taken everything else into account correctly) and to actually have separate proficiencies for Sleight of Hand vs. Thieves Tools. In the rules, they are separate things, but it appears that Larian has gone the route of "you need to have a consumable Thieves Tool to attempt to use the skill, but for rolling purpose we use Sleight of Hand".
However, it is entirely possible to play as a Ranger and not have a Rogue in your party at all.

Otherwise, I agree with most of the comments... I've certainly noticed #4 often enough. And yes, #5 is annoying. Related to that is if you use Jump to cross a gap, it would be nice if your party members where smart enough to also jump across and not make me select each one to jump them, only to find that there's no room for a landing because the ones already across have crowded the edge!