So, we all have known Install for the longest time is... Ew... So how about instead of it replacing our bases... It instead adds maybe 15 or 20% of the youkai's stats to ours, with the exception of Aptitude and Sanctity for Corrupted and Aptitude reasons. Most youkai only hit about 52 at the most in a stat and with 20% that's around +10 to a single stat. If that feels too strong then tone it back some. Just a thought to make install feel like you're actually gaining something.
Install was nerfed when it gave less bonus stats for a reason, and I don't think going back and beyond that will help much. Install already received an adjustment to exclude SAN and APT recently and I don't know if anyone's actually noticed or seen how much of a difference it's made.
Please no, we don't need more ways to buff up stat bonuses. Q_Q
I think I know why it is a bit 'meh'. Probably because the Youkai bases are weaker than a normal character's. I wonder what would it be if Rank 5 of Summoner's innates could give Youkai +1 at all their base racial points.