I own both. My vote would be for the 10/22. The 15-22 pretty much is what it is due to it's design/manufacture. The 10-22 is a "mister potato head" rifle that allows you to change/upgrade near ANYTHING that doesn't suit you. ( Barrels, stocks,triggers, bolts,mags,----) It has a huge cult like following and near unlimited aftermarket support.
The distractions you mention are easily curable with minor do it yourself / drop in mods . ( btw, Bolts do hold open on the last shot with proper ammo. )Triggers can be brought down to 2.5# the same way (and at little cost.)
My advice would be to buy a basic/mid level 10-22 and spend the $100+ savings to mod it the way you want.

__________________
Dave