I noticed two issues with the latest +15 trainer:
1) Infinite Weight: in previous versions it used to set the inventory size to 1000 and it worked perfectly, no issues. In latest release however it turns inventory numbers into negative. For example I had 1 out of 60 items (1/60), activated the trainer option and it became -29/60. So the inventory size, sort of, increased only to 90 and third of it went negative. I disabled the option and the trainer and tried it again, this time I saved the game and then reloaded and it showed 21/60. So the size was not increased and also I had suddenly 20 "ghost" items listed in inventory. I really only had 1 extra item. So something with the Infinite Weight isn't working as it used to, yet;
2) Super Damage: overall it works well, though I don't know if it in some ways would affect the combat with bosses or, say, monsters which have stages during the fight, like some dragons who go from "melee stage" to "flight stage" to "call in adds stage". Just in case I usually turn the option off when before I start such fights. However, I also noticed that this option can at times turn the target completely invulnerable or at least take no damage. For example, I see over long range (and I mean long range, extreme) some mobs, I target and blast them. Few get killed instantly but some, sometimes, stop taking any damage at all. Up until the point where I need to fight them in close range and they need to hit me, then suddenly they take big damage and explode. I can't confirm yet if it happens also when fighting something constantly at close range, though.
Otherwise any and every other option work very well, thank you.