Everyone knows the problem with the beastmaster; the beast is too frail, and takes to long to get a new one (eight hours once you found a new beast).
So here's three easy steps to fix that:
Instead of the higher of it's maximized hit points or 4xRanger level, your beast has it's maximized hit points plus 4xRanger level. This still doesn't solve all the problem, as it doesn't have any new hit dice to heal with, leading to step 2;
During each short rest, your beast regains hit points equal to 2xRanger level.
Finally, you can resummon your beast with 8 hours, rather than having to find a new one and then bond with it for 8 hours.
So here's three easy steps to fix that:
Instead of the higher of it's maximized hit points or 4xRanger level, your beast has it's maximized hit points plus 4xRanger level. This still doesn't solve all the problem, as it doesn't have any new hit dice to heal with, leading to step 2;
During each short rest, your beast regains hit points equal to 2xRanger level.
Finally, you can resummon your beast with 8 hours, rather than having to find a new one and then bond with it for 8 hours.