Here's an idea for a Link Monster that boosts itself depending on the battle position of a card it points to, and also is able to destroy monsters in Attack Position, move a Defense Position monster to the zone it points to, that is on either field, so you can move your opponent's monster to the top Link Arrow, or one of your own to boost its ATK, however the first option is probably better, as it is able to instantly destroy an opponent's monster in Defense Position it battles and inflict damage equal to its original ATK to your opponent, so while it doesn't pierce, it can take advantage of your cards that would change the battle position of monsters on the field, even if you can't inflict battle damage, you still have that option to you. A powerful LINK-4, easy enough to Link Summon, I think this can be good plenty of Decks, regardless of their playstyle as well.
2+ Effect Monsters
Gains 300 ATK for each monster it points to in Attack Position, and gains 500 ATK for each monster it points to in Defense Position. Once per turn: You can Tribute 1 monster this card points to in Defense Position; destroy all monsters your opponent controls in Attack Position, then you can move 1 monster in Defense Position on the field to the controller's zone this card points to. At the start of the Damage Step, if this card battles a monster it points to in Defense Position: Destroy that monster, then inflict damage to your opponent equal to its original ATK.