Why not combine LBD with skill points? Using the skill increases the progression of that skill and when it's on a threshold (or maximum level) you can assign a SP to raise it one level higher.
So....pretty much exactly how it was in A16?
In case any readers were unaware of the amazing skill system in A16, this is how it worked....
Take Mining. There were 2 skills involved with it....
Secondary Skill:
Mining (max 100, starts at 1/100)
Primary Skill:
Miner69er (max 5, starts at 0/5)
Both these skills would improve your yield when mining, though obviously the primary skill was far more significant of the two. The skills interacted as follows:
1. Performing actual mining slowly increased the Mining skill. You could place points into it to boost it but this was not necessary and not recommended. In fact it would be considered a waste of a point. Miner69er could only be increased by spending points.
2. Putting points in Miner69er was gated behind the current value you had in Mining. This you could not put a point into the the primary skill until the secondary skill hit a certain threshold (five thresholds, occurring at 20, 40, 60, 80, 100 I think it was).
Why this was awesome....
a) If you never mined at all in the game, Mining would be at 1/100 and Miner69er at 0/5 and you would suck at Mining.
b) You could not cheat the skill because of the LBD gate. So you could not place a point into the primary skill Miner69er until Mining hit 20.
c) To get Mining to 20 you had 3 choices:
- Spend 20 points in it (a terrible idea!!!)
- Go out and actually mine till Mining hits 20 (LBD - this was the most common approach)
- Hybrid: do some mining and also boost with points. Typically players might get Mining to 19 then just use a point to tip 20 so they could boost Miner69er asap.
Also pretty much everything you could do in the game came with a pair of skills like this (a primary skill gated behind a LBD secondary skill). So it was not 100% pure LBD, it was a very nicely designed hybrid that gave the player choice and that many found to be very satisfying and immersive.