I'm assuming the intent was for a stealthy party to be unable to keep up with a party traveling at normal speed, and a tracking party would be unable to keep up with a party traveling fast, so the wolf aspect allowed the character to surpass this. Just a guess but seems to jive with the spirit of the ability.

Judging from the wording of wolf aspect (tracking can be done at a fast pace) and that they seperate it out from moving stealthy (at a normal pace) I suspect tracking was intended to be done at a slow AND normal pace for regular folks, so wolf aspect was just a single step up (just like moveing stealthy got a single step up). I doubt many folks dive into the movement weeds this deep WRT tracking and stealthy movement but I thought it was a curious ommission.

That came up and I liked it a lot, but in the subsequent editing of this topic removed it (I think it was brought up in a comment).

This can't be emphasized enough. Once you get extra attacks the attack action essentially becomes the "multiattack" action used in the monster manual, you are not getting a second attack action.

@SevenSidedDie I'm saying that casting a spell with a bonus action AND casting shield (or counterspell) as a reaction may be the only instance where a caster could cast two spells (non-cantrips) in the same turn if one is a bonus action spell. The OP seems to want to cast multiple bonus action spells in a turn.