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Kostya, it's unclear what your claims are based on. You don't have to look far for examples. Here's the experience of a friendly resource,
wcl, where you can take and use Solmyr however you want, and even come and rush on day one. Open the "All Games" tab and see which heroes the site's players are using for Tower. And when you choose a hero for your folder, you choose the best one available at the moment!
If you find it difficult, here are the latest reports:
Tazar (Tower) defeated Adela (Tower), Random Midnight mix, XL+u
Kyrre (Tower) defeated Iona (Tower), Random True Random, XL+u
Shakti (Tower) defeated Gurnisson (Stronghold), Random True Random, XL+u
Mephala (Tower) lost to Wystan (Swamp), Random Jebus, XL
Shiva (Tower) lost to Kyrre (Rampart), Random Jebus, XL
Valeska (Tower) defeated Gunnar (Swamp), Random Midnight mix, XL+u
Alkin (Tower) defeated Tazar (Swamp), Random Balance, L
It doesn't go on any further, but it was the same before, and I've been following it. For Tower, they often take a fighter from other factions.
These are real facts, not just speculation.