Since I want to do some testing with my hardware wallets, multisig and other stuff that generally interests me, I would need a larger amount of tBTC.
Why? 0.001 tBTC is enough to create many transactions and wallets.
I was thinking I could just point a miner at a testnet pool for a few hours/days to get the amount that I would need.
As far as I know, testnet difficulty is far too high for that. I've seen a calculation from mocacinno, which concluded that it's quiet expensive to mine even just 1 tBTC.
The reason why it's so hard to use testnet the way it was intended:
There is a shitty/scammy ethereum ICO thing right now giving people shares in exchange for testnet btc, this is totally screwing up the usability of testnet and also causing antisocial dickwads to waste all our time begging for testnet coins without disclosing that the only thing they want them for is to make a quick buck.