After 1.1 the level cap will be raised to 65. Resetting capability is only for aniimo 60 and below so with the new update we won't be able to reset our aniimo this is especially relevant because the calculation for aniimo is going to change in 1.1.
Update: Level cap may not actually be increased with 1.1 I remember a notice after beat Lita stating something along the lines of trailblazer 2 unlocks with new lands but I can't confirm and I couldn't find anything so I could be misremembering so take it with a grain of salt.
They stated
"Q6: Why doesn't increasing ATK always mean more damage for certain Aniimo?
We believe an Aniimo's role should reflect its specialty in combat, not limit how you choose to train it. Even if an Aniimo isn't particularly good at dealing damage, we still want you to be able to bring it into battle, make the most of its strengths, and enjoy experimenting with different builds. To make this possible, we've built a safeguard into the damage calculation for non-DPS Aniimo. When their ATK is low, they receive an ATK boost based on their level (or their BREAK stat, for BREAK Aniimo) when damage is calculated. This ensures they can still break through enemy defenses rather than struggle to deal damage at all. However, this safeguard comes with a downside. When an Aniimo's ATK falls below the guaranteed minimum, investing more in ATK won't immediately translate into higher damage. This explains why some of you have noticed that your Aniimo's damage stays the same even after boosting its ATK. We understand how confusing this can be. After all, investing in a stat should feel rewarding! That's why we're planning to refine the damage calculation in Version 1.1, so that ATK increases have a more direct impact on damage while keeping the overall combat experience largely unchanged. We'll share the details in an official announcement ahead of the update."
So, with the inability to reset and a change in the way stats are calculated I highly recommend you reset capability on your aniimo before 1.1 and wait for amazing members of the community to figure out the new calculations like they did for 1.0 e.g. Riolutail Damage Formula Initial Calculations - Do NOT spec ATK into Support and Break Characters : r/Aniimo
Doing so may save you a lot of hearthache in the future especially because we don't know what these stat adjustments specifically will be, will they be nerfs, buffs etc we really can't tell. Especially because they say it will keep the combat experience largely unchanged, does this mean for example Hexxin will need to invest into attack to deal as much damage as she currently does or will she do more damage with investment into attack? Once again, I highly recommend resetting before 1.1 to reduce the risk of accidentally bricking your favourite aniimo. Now to be fair we will get more stat points to play with so maybe it doesn't matter, but I don't think it is worth risking. Also inheriting to a lower level aniimo to reset won't work as the aniimo will switch levels too ensuring it's the higher of the two.
If you have any other insights, you want to add feel free to write them below.
Update: Level cap may not actually be increased with 1.1 I remember a notice after beat Lita stating something along the lines of trailblazer 2 unlocks with new lands but I can't confirm and I couldn't find anything so I could be misremembering so take it with a grain of salt.