One feature I don’t like is that you always have to purchase 100 TP, no matter what you want to buy.
If you charge your Steamwallet with prepaid cards or whatever, you will always have leftover money in your wallet, but TOS doesn’t allow you to make purchases smaller than 7,x Euro (i.e. 100 TP), passively promoting to buy other Steam content with the money rather than spending it on TOS to get e.g. another character slot.
It’s also very annoying since you can’t charge less than 10 Euro with e.g. Paysafe cards, so you’re forced to have either left-over money until you charged 3 times or spend it on other Steam content.
On the other hand, microtransactions like e.g. buying another charslot by spending 33 TP are a thing bound to happen a lot of times since the content enforces it (i.e. e.g. the daily Saalus limit which gets even more multi-attractive in the future when Saalus gets reduced to 1 run per 3 shards a day or the Mystical Cubes or the specific need of a companion for many Classes).
However, you can’t spend those 33 TP unless you buy 100. And it got even worse with the 300 TP spending limit, as every TP now has a larger worth than before.
That’s why I suggest to add 33 TP bundles to the Steam shop to allow people to charge less TP/spend less money but at the same time have a benefit of spending as little as 260 Eurocents to build a new character whenever they want.
Allowing people to spend less would most likely make people spend more and enable people to invest all their charged money into TOS. It would also allow people who spent money on other Steamcontent who have left-overs to spend them on TOS, as 100TP is in competition with buying 2-4 decent Steam sale-games, while 33 TP has only to compete with 1 good game regarding the price in Euro/$.