As I get older and more experienced (29 years old), I slowly drift away from the splits and more towards full body. I also ditched the powerlifts for more athletic lifts. Training to failure or near 95% every workout is also a no-no.
I stumbled upon Tactical Barbell about 6 months ago and while I dont follow the exact splits (I did for 4 months) I abide by the principles. What I do is a mix of that and a lot of Ross Enamits philosophy.
3 strength workouts per week; brief (20-30 mins) (Weighted Chin Ups + Clean and Jerk)
2 cardio workouts (boxing)
2 SE workouts (strength endurance circuits; KB swings, push ups, pull ups, slams)
2 Prehab workouts (grips, core, lower back, rotator cuffs)
The point is to be explosive and strong (most people are just strong), and be able to replicate that explosiveness over a long period of time, not just once then gas out.
A typical week might look like this:
Day 1: Strength + SE
Day 2: Boxing + Prehab
Day 3: Strength
Day 4: SE + Boxing
Day 5: Prehab
Day 6: Strength
Day 7: OFF
It allows flexibility with my workouts, basically I can do Strength + SE + Boxing in one day if I have a day off mid week and then have 2 days off because Im on 12 hours shifts, etc.