many users here use liteplacer. Me too.
IMHO the stock liteplacer software is fine for sporadic editing where mainly the boards have few components and precision is not a critical factor.
When I used it there was no bottom vision so I choose to switch to openpnp. The only physical change to do is to change Z+ to Z- and perform a firmware upgrade and small tweaks to the TinyG configuration.
Honestly, if you're thinking about buying liteplacer, I suggest you start directly with openpnp but even more to be meticulous when mount to table (squareness) especially alignment for the cameras.
Obviously for every problem you can write to this group. There is always someone willing to help.
This is the strength of the community :-)