Fair point but doing the math, it won’t take very long for even 0.4% to become more expensive than £36. And from what I can tell (newbie still learning here so I may be wrong!) for someone with an existing pot and investing enough each year need an ISA the % charge will already be larger that freetrade.
I’m assuming, there is no increase in cost to service this feature so no reason to charge people more for nothing. Give it a fair price and leave it at that to avoid confusion. But I’ll leave @freetrade_cal to give an official answer