Have you checked MXP, CPH and VIE? Those are definitely premium destinations too...
Oh, and have you checked if TLV will get the A320 during the night? I should expect it would...
I've checked them. CPH will also get A319 but later than TXL, HAM, PRG. At the end of August they go from 5 daily RJ to 2 daily A319 and 3 daily RJ. As from the second week of September CPH gets 3 daily A319 and 2 daily RJ.
Same with MXP, no A319 for the biggest part of the summer season, but at the end of August MXP goes from 5 daily RJ to 4 daily RJ and 1 daily A319. As from early September MXP gets 2 daily A319 and 3 daily RJ.
Same story with VIE. For the biggest part of the summer they get 2 daily RJ, 1 daily A319 and 1 daily B737 (S10 was 2 daily RJ and 2 daily 737). As from early September it goes to 3 daily A319 and 1 daily B734.
So TXL, PRG, MXP, HAM, CPH and GOT (maybe more but I didn't checked them all) are RJ routes wich will get A319 (734 for GOT). GVA and VIE will get more A319... It's clear what SN is doing...the same as the other LH group members and Austrian is the latest exemple wich shows that this works (they had a small profit in the last quarter, that was a long time ago).
BTW, I still don't find any A320 for TLV (didn't check destinations like Nice, MAD...)