I'm a stamplar main player that does usually solo overland WBs and solo 4-men dungeons. There are two reasons why I play mostly solo:
1. I'm not a good weaver. I do around 28k~30k on 6mil dummy and 50k~52k dps on trial dummy.
2. Latency is killing my play. It falls around 250 on average and occasionally over 300 and 500 in crowded area.
In solo play, I have to keep myself alive while doing sufficient amount of damage. For the survival, I may cast damage shield, block, and dodge the incoming attacks. For damage dealing, it is generally similar to the dedicated DDs; I weave, do rotation, even it is not complete and static, rather dynamic. The problem is that the survival, or the damage mitigation costs a lot. With HA burst resource restoration, I could cast damage shield upon myself, block to mitigate the damage, and HA to keep going with my fight in the case of resource starvation. But in PTS, with HA resource restoration's gone, I have to weave well to keep going with my fight, which is practically absurd. I admit that in static rotation, PTS change gives enormous buff to the sustain. Even with my live server setting with poor recovery (around 700 with Selene, Red mountain, and Deadly in dps parsing / 700 CPs / Tri-stat food), I hardly saw my resource being under the half the max resource pool. However, in solo play situation, the change was totally disappointing. Nobody would love to kite around spamming low damaging LAs to get their resource back.
For the PVP aspect, I'm not a core PVPer though, what I has been seen was how those PVPers keep up with their fights in the situation of resource starvation. What they did were 1) Kite until the resource comes back, 2) tap on pots, 3) HA with proper weapons. Couldn't have opportunity to test some PVP situations in PTS, however, what I could think of was unpleasant and boring future with the proposed LA and HA changes goes in live.
So my conclusions are like below.
1. HA resource restoration should STILL be there. Without it, solo players, tanks, healers will lose their standing ground.
2. LA damage nerf will not close the dps gap (ZOS puts it "skill gap"). Anyone who has ever been in random normal dungeon would know about many, many of Bow / Two-handed LA spammers with random Khajiit helm on their head. What they will see is 3-digits damage with no advantages to them if the change goes live.
3. Dps gap cannot be closed. Rather, try closing "Content Gap", which means that low end players also take place in end game contents like trial.
4. Closing the content gap would be achieved by generally buffing spammables to compensate dps loss due to imperfect weaving for low end players. Jabs should not be buffed to the large extent. It is already too powerful with burning light passive.
5. Please consider the effects that the proposed change exerts on the PVP.