In the first deck, I'd take
Morphun over
Taham. He's guarenteed to give you three pills unlike
Taham, which gives two when you win; that's also risky (amusingly, some people think +pills = +attack... but then, if you pill 3 with
Smokey Cr, and you get beat by a two pilled
Petra, you're three pills down... doesn't sound much like a +21 attack to me :/) Again, though, personal choice.
Sentogan or Veenyle... this is little harder to decide. While -3 opp. damage min 2. is excellent for a 2 star, 1 damage is so meaningless that you have no incentive at all to pill it, nor the option to. Sometimes that can be taken advantage of to play high damage cards like
Jay that do high damage even reduced, or cards like
Phyllis that can bypass the reduction. This can be manipulated to some degree, but it still is a pretty big disadvantage. Nevertheless, it's your own choice
In my opinion, decks that focus on one theme (like pill manip.) sound good on paper are but quite limited than versatile decks. I think you should combine those two decks to strike a balance... forgoing
Rowdy or
Gibson in favor of
Nobrodroid is.... extremely unrecommended unless you happen to be a prodigy. Maybe
Morphun
Rowdy
Gibson
Otakool
Tremorh
Gil
Sentogan
Veenyle