That's a relief to hear, honestly. Mamoru's a little outside of my usual character type box, so I don't feel quite as at home with his voice as I have with others. It's also been a while since I've picked up a character I haven't dabbled with before in some way, so hearing that I'm getting that serious/dork/dad balance right helps me to feel more confident in my characterization.
My tagging speed likely isn't as big of a concern as I sometimes psych myself into thinking it may be. I used to be a pretty fast tagger before I bowed out of games a year or so ago when my workload and duties picked up, so a lot of that worry is me comparing how I used to tag in games to how I'm able to tag within them now. That's sometime I just need to stop concerning myself with since, like I said, it's something that's not likely to change. But it is good to hear that my tagging speed doesn't seem to be an issue! And I will be looking out for more ways to get him involved. A lot of my reluctance to throw him into things is the fact that he's such a low key character who is often present at more social venues for the sake of other characters, but it's also that: controlling my thread count. I don't want to overwhelm myself and hit a point where I'm unable to keep up. I will be keeping an eye out for more opportunities where it's more fitting for him to be present, and keep what you said in mind about suggesting logs that would appeal to him in mind.