I think his tech value is good at 82, wouldn't raise even more tbh. Imho there's quite a big difference between players like Scocco and Romero who are smooth at his touches almost all the time and Silva who is very very good for a guy like him, but i wouldn't get them such close. Agree in decreasing his resp and ds.
Eventhough he keeps being good, he is far from his best moment. I mean in terms of numbers, his goal ratio is declining quite a lot since 2017:
U Catolica, 6 goals in 32 matches
Talleres, 4 goals in 13 matches
Gimnasia, 10 goals in 34 matches
AAAJ, 5 goals in 21 matches
Yeah at Gimnasia he wasn't that bad since the team was absolutely shit. But still, he's clearly declining. Being said that, he's quite useful to be a post player.