[Skullcatrons]

I think the only real issue I ever have with Solcharges is the cost associated with Holy Sword and Wings and the fact that in some cases, pressing Light Shine from a scroll over your Solblader spells is pretty optimal due to the +1 Solcharge you get for it.

My personal suggestions in order of what I think is better is:

1) Change Holy Sword and Holy Wings to 2m, this lets you recoup an extra Solcharge on the turn that you use it and enables synergy with movement options like crane hop.
1b) Alternatively change these buffs to be 1m or 0m; they already have an associated cost tied to a very valuable class mechanic.
2) Let Lux Relido give a Sol Charge on full cast.

I like 1B the most. Just make it 1M so that when you solcharge, you could get the buff right off the bat. Solblader is lot of setups. Here's the setup lineup with total momentum costs every actions:

3M - Solcharge
6M - Solsphere
End Turn -
9M - Empower Solsphere 
12M - Solcharge
End Turn -
15M - Holy Sword
18M - Either Mercala Spell, or another Solcharge. 
End Turn - 
21M - Holy Shield

You spent roughly 21 momentums having to do nothing but solcharging. Once everything is set up, you cycles Shinken and Bash to keep the buff duration going so you don't have to waste 3M to re-apply the buff. If we just reduce Holy Sword and Holy Shield to 1M. That would save us 4M worth of preparations. And allow us to spend less time messing around.

By making the buffs down to 1M. this could be new setup:

3M - Solcharge
6M - Solsphere
7M - Holy Shield
End Turn -
10M - Solcharge
13M - Empower Solsphere
14M - Bash
End Turn - 
17M - Solcharge
18M - Holy Sword

And then you're ready to go. Reducing the time you spent setting up by 1 round effectively.