I'll keep a few each of my choice prestigers (P/PR Wiggly, BB/XC Parasect, WG/TB Lanturn) but given that I have more than a dozen of some mons.... 2-3 of each seems fine.
Yes, you should ditch your level 1 strat mons.
Up
0
Down
No need for "suicide squads", making the game nicer overall. And all the best prestigers could grow and defend.
Up
0
Down
I'm not really seeing what the point is in having a 1700 CP Golduck for example. Before, he could prestige against a Rhydon. Now? He's not "growing" into anything.
Up
0
Down
With Confusion it can be a low-end defender, casual players might use it for attack, it isn't the best 'mon to begin with. I now have no reason to keep so many Furrets even though I love 'em but I'm not complaining.